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DWR Archived News -- 2017 News Announcements

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1416 9th Street, Room 204
Sacramento CA 95814
Phone: (916) 653-6192
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NOTE: This information may have been superseded by later news releases. These items are listed here for archive purposes, only.

321 East Porterville Households Now Connected To Reliable Water Supply
EAST PORTERVILLE, CA – One year after a new distribution system began delivering safe drinking water to families in the drought-stricken community of East Porterville, 321 homes are now receiving water from the system and an additional 446 homes are expected to be connected by the end of 2017. (08/18/2017)
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DWR Launches Salmon Spawning Improvement Project
SACRAMENTO – The California Department of Water Resources (DWR) launched a Feather River salmon spawning improvement project today in the City of Oroville. The project will be completed by the end of August, in anticipation of the salmon spawning season that commences in September. DWR fishery biologists have identified key spawning areas in which 5,000 cubic yards of spawning gravel will be placed. Located behind the Municipal Auditorium, the area lost much of its spawning gravel as a result of last winter’s high river flows. Heavy equipment vehicles such as dump trucks, bulldozers, and excavators will be used in the river channel to complete the project. (08/14/2017)
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Lake Oroville Spillways Construction Updates
SACRAMENTO – Today the Department of Water Resources (DWR) provided an update on construction work on the Lake Oroville Spillways Emergency Recovery Project.
Continued Construction on the Main Spillway
• Construction efforts at the Lake Oroville spillways have remained focused on repairing and reconstructing the gated flood control spillway, also known as the main spillway, by November 1. (08/09/2017)
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Pyramid Lake’s Vaquero Beach Open for Swimming
SACRAMENTO -- The Department of Water Resources (DWR) said today that Vaquero Swim Beach at Pyramid Lake in Los Angeles County will be open for swimming beginning Saturday as a result of improved algal bloom conditions. Laboratory tests of lake water this week detected a level of algae toxins that merits a “Caution” advisory, which means boaters and recreational users may swim in the lake and at designated swim beaches, but should remain cautious of potential blooms. (08/07/2017)
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DWR to make major flood protection announcement
SACRAMENTO – The California Department of Water Resources (DWR), along with officials from the Sutter Butte Flood Control Agency, U.S. Army Corps of Engineers, and State, federal and local elected officials, will hold a press conference to mark a major milestone in the effort to protect Californians from the risk of floods and high-water events on August 3. The announcement will be made atop a three-mile stretch of damaged levee in Yuba City. This levee was damaged during the 2017 winter storms and poses a significant risk to the Central Valley community. (08/03/2017)
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Pyramid Lake Algal Bloom Tested at ‘Warning’ Level
Sacramento – The Department of Water Resources (DWR) today elevated its algal bloom advisory for Pyramid Lake in Los Angeles County to “Warning,” which means boaters and other recreational users should not swim in the main body of the lake. Based on today’s field test, the advisory for Emigrant Swim Beach remains at “Caution” and is unchanged since mid-July. Swimming is still allowed at that beach, but recreational users are urged to avoid direct contact with blue-green algae. (08/02/2017)
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Improvements Begin at Two Lake Oroville State Recreation Area Sites
SACRAMENTO – The California Department of Water Resources (DWR) has begun construction to expand visitor parking lots and improve facilities at the Bidwell Saddle Dam Trailhead at Kelly Ridge Road in Oroville and the Lime Saddle Boat Launch Area in Paradise. (07/28/2017)
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Silverwood Lake Algal Bloom Now at 'Caution' Level; Swim Beaches Will Be Open This Weekend
Sacramento – The Department of Water Resources (DWR) has detected a reduced amount of algal toxins in Silverwood Lake. The level now warrants a “Caution” to swimmers rather than the “Warning” that was issued at the lake on July 14. While swimming will be allowed this weekend, all recreational users are still urged to avoid direct contact with blue-green algae in Silverwood Lake, which is in San Bernardino County. (07/28/2017)
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Final 2017 Construction Plans for Lake Oroville Spillways Project Approved
SACRAMENTO – Today, the Department of Water Resources (DWR) provided an update on construction work on the Lake Oroville Spillways Emergency Recovery Project. DWR received authorization to proceed with its final 2017 construction plan from the DSOD and FERC on July 13 and 15. The work to be completed this year now has all required approvals from federal, state, and independent oversight groups. (07/26/2017)
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California WaterFix Reaches Key Milestone As State Environmental Review Is Certified
SACRAMENTO – Clearing another major milestone toward the modernization of the state’s water delivery system, the California Department of Water Resources (DWR) today certified the environmental analysis of the California WaterFix. Today’s announcement follows recent federal biological opinions that confirm the project is consistent with environmental and wildlife protection standards. (07/21/2017)
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Silverwood Lake Algal Bloom at ‘Warning’ Level
Sacramento – The Department of Water Resources (DWR) has issued a “warning” advisory for Silverwood Lake’s Sawpit swim beach and Cleghorn swim beach due to the presence of blue-green algae (cyanobacteria). (See Statewide Guidance on Cyanobacteria & Algal Blooms on page 2.) (07/14/2017)
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Pyramid Lake Algal Bloom Now at ‘Caution’ Level; Toxin Level Lower than Last Week
Sacramento – The Department of Water Resources (DWR) has detected a reduced amount of microcystins at Pyramid Lake’s Vaquero Day Use Swim Beach. The level now warrants a “Caution” to swimmers rather than the “Warning” that was issued at the lake on July 7. While swimming is now allowed, all recreational users are still urged to avoid direct contact with blue-green algae (cyanobacteria) in Pyramid Lake in Los Angeles County. (07/14/2017)
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DWR’s State Fair Exhibits Inspire Water Conservation, Rain or Shine
SACRAMENTO – California’s five-year drought proved that water users up and down the state could achieve great water savings with planning and forethought.
After a record winter of rain, many people are asking if water conservation is still important. The Department of Water Resources (DWR) answers that question at the 2017 California State Fair (July 14-30 at Cal Expo) with its colorful exhibit, (07/12/2017)
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Pyramid Lake Algal Bloom Now at ‘Warning’ Level; Public Urged To Avoid Water Contact
Sacramento – The Department of Water Resources (DWR) is urging boaters and recreational users to avoid direct contact with or use of waters containing blue-green algae (cyanobacteria) in Pyramid Lake in Los Angeles County.
Water from the swim beach at Pyramid Lake’s Vaquero Day Use Area was tested using a field test kit on July 6 and showed a reading of 10 micrograms of microcystins per liter, a level that prompts the issuance of a “Warning” health advisory and the closure of the swim area. (07/07/2017)
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DWR Announces Next Round of Lake Oroville Community Meetings
SACRAMENTO – SACRAMENTO - The California Department of Water Resources (DWR) is hosting three community meetings in multiple locations in July to update communities in the region about the ongoing Lake Oroville Spillways Emergency Recovery Project. (07/06/2017)
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San Luis Reservoir Algal Bloom Now at ‘Danger’ Level
SACRAMENTO – The Department of Water Resources (DWR) said today that people should stay out of the water at San Luis Reservoir in Merced County until further notice and avoid eating fish from the reservoir due to the presence blue-green algae (cyanobacteria). (06/30/2017)
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DWR Releases Proposal Solicitation Package for Proposition 1 Water Desalination Grants
SACRAMENTO – The Department of Water Resources (DWR) has released the final Water Desalination Grant Program Round 4 Proposal Solicitation Package (PSP), which also includes the guidelines for the grant program. The grant program is funded by Proposition 1, the $7.5 billion water bond overwhelmingly approved by California voters in 2014. Proposition 1 authorized the Legislature to appropriate funds for competitive grants for the desalination of brackish or seawater. The Legislature appropriated $93.1 million for this program, which is available in fiscal years 2017-18 and 2018-19. Applications are now being accepted through September 1, 2017. (06/27/2017)
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California WaterFix Receives Authorization for Proposed Project
SACRAMENTO—Federal agencies responsible for the protection of species listed under the Endangered Species Act (ESA) today provided biological opinions on the proposed construction and operation of California WaterFix. These biological opinions allow WaterFix to continue moving toward construction as early as 2018. This important project is designed to ensure a reliable water source for 25 million Californians while affording environmental protections for multiple species that depend upon the Sacramento-San Joaquin Delta. (06/26/2017)
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Bill Croyle, DWR Acting Director, Retires
The California Department of Water Resources Acting Director William R. Croyle today announced his retirement, effective July 1, 2017.
Croyle put his original retirement plans on hold in January 2017 when he was asked by Governor Edmund G Brown Jr. to serve as Acting Director of the department. Cindy Messer, DWR Chief Deputy Director, will serve as Acting Director of the department until a new director is appointed. (06/23/2017)
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Oroville Spillways Work Continues, Heat-related Safety Measures in Place
SACRAMENTO – The following is a regular update from the California Department of Water Resources (DWR) regarding Lake Oroville Spillways Emergency Recovery Project activities.

Continued Recovery Work on the Main and Emergency Spillways
• Construction continues at the site by DWR’s prime contractor, Kiewit Infrastructure West.
• Demolition continues on the bottom 600 feet of the upper chute of the main spillway.
• The final 1,000 feet of main spillway leading to the radial gates will be patched and reinforced, and will remain intact this year. This 1,000-foot section will be replaced and reconstructed in 2018. (06/21/2017)
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Blue-Green Algal Bloom Found in San Luis Reservoir; Public Urged To Avoid Water Contact
Sacramento – The Department of Water Resources (DWR) is urging boaters and recreational users to avoid direct contact with or use of waters containing blue-green algae (cyanobacteria) in San Luis Reservoir in Merced County.
The recommendation is based on the potential health risks from the algae. Water sampled on June 19 at the Basalt Boat Launch contained approximately 10 micrograms per liter of microcystins, a level that prompts warning signs to be posted at the reservoir. (06/20/2017)
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DWR Releases Final Environmental Documents for New Delta Research Station
SACRAMENTO – A significant milestone has been reached in the effort to build a state of the art scientific field station in the Sacramento-San Joaquin Delta. The California Department of Water Resources (DWR) in May finalized the environmental documents for construction of a research hub on the former Rio Vista Army Base. (06/13/2017)
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Lake Oroville Spillways Work Continues, Updates on Related Activities
SACRAMENTO – The following is a regular update from the Department of Water Resources (DWR) on Lake Oroville Emergency Recovery project activities.
Continued Recovery Work
• Construction continues at the site by DWR’s prime contractor Kiewit Infrastructure West Co. In the past two weeks, Kiewit has focused on removing the lower 2,000 feet, or lower chute, of the gated flood control spillway (also known as the main spillway.) Kiewit is using excavators and controlled blasting to demolish the concrete slabs and walls of the lower chute. (06/07/2017)
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DWR Announces ‘Catch A Special Thrill’ for Kids Event at Lake Oroville SRA
SACRAMENTO – A day of outdoor recreation and fishing for disabled children will be held at Lake Oroville State Recreation Area at the Bidwell Canyon Boat Launch in Butte County on Saturday, June 10, from 8 a.m. to 2 p.m. Event sponsors are the Department of Water Resources (DWR), Department of Parks and Recreation (DPR), Department of Forestry and Fire Protection (Cal-Fire), Department of Fish and Wildlife (DFW), and the “Catch A Special Thrill” for Kids Foundation. (06/01/2017)
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Test of Lake Oroville Emergency Siren
The California Department of Water Resources (DWR) today notified community members in the Oroville area of a new siren that was recently installed near the gates of the Lake Oroville flood control spillway (also known as the main spillway).
DWR will operate an audible test of the emergency siren this Friday (June 2) at noon. Although loud, this is only a test and is nothing to worry about. The test will last less than one minute. (06/01/2017)
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National Dam Organizations Comment on Current State of Lake Oroville Spillway Incident Investigation
Two internationally recognized dam engineering and dam safety organizations released a statement Friday about the Lake Oroville spillway incident investigation. The Association of State Dam Safety Officials (ASDSO) and the United States Society on Dams (USSD) selected the independent Forensic Team members, who are charged with finding the cause or causes of the Lake Oroville spillway incident. The statement describes the Forensic Team's process, discusses its preliminary findings and explains individual roles, including two members “selected for their expertise in how human and organizational factors may contribute to dam safety incidents.” (05/30/2017)
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DWR to Provide Updates on Construction on Lake Oroville Spillways
SACRAMENTO - The California Department of Water Resources (DWR) will host a moderated conference call for media on Wednesday, May 24, to provide updates on the construction activities at the Lake Oroville spillways. DWR Moderated Media Conference Call When: Wednesday, May 24, at 10 a.m. Where: 1-866-719-0110 Conference ID: 1799450 What: Updates on construction at the Lake Oroville spillways Who: Members of DWR, the California Natural Resources Agency and Kiewit Construction How: This moderated conference call is for members of the media only (05/23/2017)
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Fifth Memo from Board of Consultants on Oroville Spillways Available
SACRAMENTO – The California Department of Water Resources (DWR) today posted the fifth memo prepared by the independent Board of Consultants (BOC) regarding the spillways at Lake Oroville. Following prior protocol set for the release of all BOC documents, the memo has been released with Critical Energy Infrastructure Information (CEII) redacted. (05/19/2017)
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Oroville Spillway Incident Update - May 19
The flood control spillway flow is currently at 20,000 cubic feet per second (cfs). Inflow is approximately 12,946 cfs. Current lake elevation is at 829.98 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 19,550 cfs. (05/19/2017)
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Oroville Spillway Incident Update - May 18
The flood control spillway flow is currently at 20,000 cubic feet per second (cfs). Inflow is approximately 21,960 cfs. Current lake elevation is at 832.16 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 20,550 cfs. (05/18/2017)
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DWR Announces Changes to Operations at Lake Oroville Spillways
SACRAMENTO – The following is a regular update from the Department of Water Resources (DWR) on the Lake Oroville Spillways recovery project activities.
Transition from Incident Emergency Response to Incident Emergency Recovery
The California Department of Water Resources (DWR) on Sunday completed transition from Incident Emergency Response to Incident Emergency Recovery at the damaged Lake Oroville spillways. (05/17/2017)
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$86.3 Million Available for Groundwater Sustainability Plans and Projects
Sacramento –The Department of Water Resources (DWR) has announced the release of its 2017 Draft Proposal Solicitation Package for Groundwater Sustainability Plans and Projects. The grant program is funded by Proposition 1, the $7.5 billion water bond overwhelmingly approved by California voters in 2014. (05/17/2017)
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Oroville Spillway Incident Update - May 17
The flood control spillway flow is currently at 20,000 cubic feet per second (cfs). Inflow is approximately 21,912 cfs. Current lake elevation is at 834.29 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 20,550 cfs. (05/17/2017)
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Oroville Spillway Incident Update - May 16
The flood control spillway flow is currently at 20,000 cubic feet per second (cfs). Inflow is approximately 19,008 cfs. Current lake elevation is at 836.22 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 21,050 cfs. (05/16/2017)
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Recirculate Draft Document for Fremont Weir Adult Fish Passage Modification Project
SACRAMENTO, Calif. – The California Department of Water Resources (DWR) and U.S. Bureau of Reclamation (Reclamation) are recirculating for public review the Biological Resources portion (Section 3.5) of the draft Initial Study and Environmental Assessment (IS/EA) and proposed Mitigated Negative Declaration (MND) for the proposed Fremont Weir Adult Fish Passage Modification Project, located in the northern portion of the Yolo Bypass, approximately 8 miles northeast of Woodland in Yolo County. The draft IS/EA and proposed MND was previously circulated for public review and comment February 3 through March 6, 2017 (State Clearinghouse Number 201702212). (05/15/2017)
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DWR announces changes to operations of Lake Oroville Spillway
SACRAMENTO – The California Department of Water Resources (DWR) began making changes to outflows of the main spillway this morning. Notification of the flow change was made to the public in the afternoon on Sunday, May 14. (05/15/2017)
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Oroville Spillway Incident Update - May 15
The flood control spillway flow is currently at 23,500 cubic feet per second (cfs). Inflow is approximately 25,508 cfs. Current lake elevation is at 838.06 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 24,550 cfs. (05/15/2017)
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Oroville Spillway Incident Update - May 14
The flood control spillway flow is currently at 25,000 cubic feet per second (cfs). Inflow is approximately 1,841 cfs. Current lake elevation is at 840.78 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 26,050 cfs. (05/14/2017)
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Oroville Spillway Incident Update - May 13
The flood control spillway flow is currently at 25,000 cubic feet per second (cfs). Inflow is approximately 6,330 cfs. Current lake elevation is at 843.13 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 26,050 cfs. (05/13/2017)
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Oroville Spillway Incident Update - May 12
The flood control spillway flow is currently at 25,000 cubic feet per second (cfs). Inflow is approximately 7,773 cfs. Current lake elevation is at 845.37 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 27,050 cfs. (05/12/2017)
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Oroville Spillway Incident Update - May 11
The flood control spillway flow is currently at 25,000 cubic feet per second (cfs). Inflow is approximately 19,013 cfs. Current lake elevation is at 847.36 feet. Hyatt Powerplant is currently discharging 5,000 cfs. Total Feather River flow is 27,550 cfs. (05/11/2017)
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DWR Releases Initial Findings from Forensics Team Regarding Lake Oroville Spillways
SACRAMENTO – The California Department of Water Resources (DWR) today made public a memo from the independent Forensics Team, which outlines a list of potential physical factors that may have contributed to the Lake Oroville gated (main) spillway failure on Feb. 7. (05/10/2017)
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Oroville Spillway Incident Update - May 10
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 14,314 cfs. Current lake elevation is at 849.10 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 17,750 cfs. (05/10/2017)
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Oroville Spillway Incident Update - May 9
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 19,166 cfs. Current lake elevation is at 847.88 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 7,750 cfs. (05/09/2017)
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DWR Announces ‘Catch A Special Thrill’ for Kids Event at Brannan Island SRA
SACRAMENTO – A day of outdoor recreation and fishing for disabled children will be held at the Brannan Island State Recreation Area in Sacramento County on Saturday, May 13. Event sponsors are the Department of Water Resources (DWR), Department of Parks and Recreation (Parks), California Conservation Corps (CCC), Department of Forestry and Fire Protection (Cal-Fire) and the “Catch a Special Thrill” C.A.S.T. for Kids Foundation. (05/08/2017)
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Oroville Spillways Work Continues, Construction Update
SACRAMENTO – The following is an update from the Department of Water Resources (DWR) about construction-related activities on the Lake Oroville Spillways Recovery project. DWR is committed to informing the public about the work being done to repair the damaged spillways and related impacts to roads, recreation, public access and surrounding infrastructure. (05/08/2017)
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Oroville Spillway Incident Update - May 8
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 14,411 cfs. Current lake elevation is at 846.50 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 7,750 cfs. (05/08/2017)
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Oroville Spillway Incident Update - May 7
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 20,691 cfs. Current lake elevation is at 844.86 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 7,750 cfs. (05/07/2017)
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Oroville Spillway Incident Update - May 6
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 20,618 cfs. Current lake elevation is at 843.08 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 7,750 cfs. (05/06/2017)
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Early Release of $3 Million to Fund Oroville Community Projects
SACRAMENTO – The Department of Water Resources (DWR), the City of Oroville, and surrounding community partners announced on Thursday, May 4, the early release of $3 million from a fund to support recreation, tourism, and related economic development projects. (05/05/2017)
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Oroville Spillway Incident Update - May 5
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 28,447 cfs. Current lake elevation is at 840.91 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 8,500 cfs. (05/05/2017)
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Oroville Spillways Work Continues, Dam Safety Questions Addressed
SACRAMENTO – The following is a regular update from the Department of Water Resources (DWR) on Oroville Spillway Recovery project activities. DWR is also addressing concerns raised at recent public meetings about the safety of Oroville Dam. (05/04/2017)
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Oroville Spillway Incident Update - May 4
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 20,534 cfs. Current lake elevation is at 839.01 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 8,500 cfs. (05/04/2017)
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Oroville Spillway Incident Update - May 3
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 18,924 cfs. Current lake elevation is at 837.15 feet. Hyatt Powerplant is currently discharging 8,150 cfs. Total Feather River flow is 10,200 cfs. (05/03/2017)
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Oroville Spillway Incident Update - May 2
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 17,376 cfs. Current lake elevation is at 835.70 feet. Hyatt Powerplant is currently discharging 8,150 cfs. Total Feather River flow is 11,200 cfs. (05/02/2017)
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Final Survey of 2017 Finds Water-Rich Snowpack
SACRAMENTO –Today’s manual snow survey by the Department of Water Resources (DWR) at Phillips Station in the Sierra Nevada found a Snow Water Equivalent (SWE) of 27.8 inches, 190 percent of the May 1 long-term average there (14.6 inches).
Electronic measurements indicate the water content of the statewide snowpack today is 42.5 inches, 196 percent of the May 1 average. The SWE of the northern Sierra snowpack is 39.9 inches (199 percent of average); the central and southern Sierra readings are 47.1 inches (202 percent of average) and 37.6 inches (180 percent of average), respectively. (05/01/2017)
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Oroville Spillway Incident Update - May 1
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 7,194 cfs. Current lake elevation is at 834.89 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 34,700 cfs. (05/01/2017)
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Oroville Spillway Incident Udpate - Apr. 30
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 22,537 cfs. Current lake elevation is at 837.52 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 34,700 cfs. (04/30/2017)
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Oroville Spillway Incident Update - Apr. 29
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 31,310 cfs. Current lake elevation is at 840.16 feet. Hyatt Powerplant is currently discharging 2,650 cfs. Total Feather River flow is 37,650 cfs. (04/29/2017)
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DWR Announces ‘Catch A Special Thrill’ for Kids Event at Silverwood Lake
SACRAMENTO – A special day of outdoor recreation and fishing for disabled and disadvantaged children will be held at Silverwood Lake in San Bernardino County on Saturday, May 6, under the sponsorship of the Department of Water Resources (DWR), in partnership with the Department of Parks and Recreation (DPR), Department of Fish and Wildlife (DFW), and the C.A.S.T. for Kids Foundation, who will sponsor a “Catch A special Thrill” for kids event. (04/28/2017)
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Oroville Spillway Incident Update - Apr. 28
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 4,932 cfs. Current lake elevation is at 843.43 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 43,000 cfs. (04/28/2017)
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Oroville Spillway Incident Update - Apr. 27
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 25,368 cfs. Current lake elevation is at 847.00 feet. Hyatt Powerplant is currently discharging 8,000 cfs. Total Feather River flow is 43,000 cfs. (04/27/2017)
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Oroville Spillway Incident Update - Apr. 26
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 24,025 cfs. Current lake elevation is at 849.61 feet. Hyatt Powerplant is currently discharging 2,000 cfs. Total Feather River flow is 36,500 cfs. (04/26/2017)
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Last 2017 Snow Survey at Phillips Set for May 1
SACRAMENTO – The Department of Water Resources (DWR) conducts five manual snow surveys at Phillips Station in the Sierra Nevada from around the first of January through May each calendar year. The snowpack’s water content usually peaks around April 1, after which the sun’s higher position in the sky contributes to rapid melting and a diminished snowpack. (04/25/2017)
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Oroville Spillway Incident Update - Apr. 25
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 32,096 cfs. Current lake elevation is at 851.93 feet. Hyatt Powerplant is currently discharging 2,000 cfs. Total Feather River flow is 35,500 cfs. (04/25/2017)
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DWR Provides Update on Lake Oroville Spillways Repair Work
SACRAMENTO – The California Department of Water Resources (DWR) today released all three of the reports prepared by the independent Board of Consultants about the damaged spillways at Lake Oroville. The reports have been released with Critical Energy Infrastructure Information (CEII) redacted. DWR will follow this same protocol for each subsequent report from the Board of Consultants. (04/25/2017)
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Oroville Spillway Incident Update - Apr. 24
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 24,509 cfs. Current lake elevation is at 853.97 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 35,500 cfs. (04/24/2017)
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Oroville Spillway Incident Update - Apr. 23
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 26,094 cfs. Current lake elevation is at 855.98 feet. Hyatt Powerplant is currently discharging 1,000 cfs. Total Feather River flow is 35,750 cfs. (04/23/2017)
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Oroville Spillway Incident Update - Apr. 22
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 26,978 cfs. Current lake elevation is at 857.85 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 36,750 cfs. (04/22/2017)
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Oroville Spillway Incident Update - Apr. 21
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 23,275 cfs. Current lake elevation is at 859.49 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 34,750 cfs. (04/21/2017)
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DWR Update on Oroville Spillway Repair Activities
SACRAMENTO – The following is an update from the Department of Water Resources (DWR) on construction-related activities on the Oroville Spillway Recovery project. DWR is committed to informing the surrounding communities and the general public about the work being done to repair the damaged spillway and related impacts to roads, recreation, public access and surrounding infrastructure. (04/20/2017)
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Oroville Spillway Incident Update - Apr. 20
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 41,728 cfs. Current lake elevation is at 860.61 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 34,750 cfs. (04/20/2017)
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Oroville Spillway Incident Update - Apr. 19
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 24,884 cfs. Current lake elevation is at 861.53 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 34,750 cfs. (04/19/2017)
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Oroville Spillway Incident Update - Apr. 18
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 28,236 cfs. Current lake elevation is at 862.16 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 33,500 cfs. (04/18/2017)
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DWR Awards Contract for Oroville Spillways Repair
SACRAMENTO – The Department of Water Resources (DWR) today awarded a contract to Kiewit Infrastructure West Co., for repair work on Oroville Dam’s spillways. Repairs are scheduled to begin immediately to have the system operational by November 1, the traditional start of the winter rainy season. (04/17/2017)
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DWR Announces Oroville Community Meetings
SACRAMENTO - The California Department of Water Resources (DWR) is hosting seven public meetings in multiple locations to update communities in the region about the ongoing Oroville spillway recovery effort. The meetings will be opportunities for members of the public to hear from DWR leadership and experts about the status of the Oroville spillway and to ask questions and provide comments about the recovery process. The meetings will have a similar agenda, format and content. (04/17/2017)
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Oroville Spillway Incident Update - Apr. 17
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 28,224 cfs. Current lake elevation is at 862.93 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 33,500 cfs. (04/17/2017)
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Oroville Spillway Incident Update - Apr. 16
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 28,200 cfs. Current lake elevation is at 864.11 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 35,000 cfs. (04/16/2017)
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DWR Opens Bids for Oroville Spillway Repair
SACRAMENTO – The Department of Water Resources (DWR) today opened bids submitted by three contractors to repair the Oroville spillway. The bids are for work to implement DWR’s Oroville spillway recovery plan so a system is in place by November 1, 2017 that can safely accommodate next winter’s weather.
The bids will be reviewed by DWR for accuracy and completeness over the weekend. DWR expects to award the work as soon as Monday, April 17. (04/15/2017)
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Oroville Spillway Incident Update - Apr. 15
The flood control spillway flow is currently at 35,000 cubic feet per second (cfs). Inflow is approximately 31,576 cfs. Current lake elevation is at 865.20 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 35,000 cfs. (04/15/2017)
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State Water Project Deliveries Increased
SACRAMENTO – With record rainfall in the Northern Sierra and the snowpack still building, the Department of Water Resources (DWR) today increased its estimate of this year’s State Water Project (SWP) supply to 100 percent for contractors north of the Sacramento-San Joaquin Delta and 85 percent of requests for other contractors. (04/14/2017)
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Oroville Spillway Incident Update - Apr. 14
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 33,202 cfs. Current lake elevation is at 865.79 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 23,000 cfs. (04/14/2017)
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Northern Sierra Precipitation Sets Water Year Record
SACRAMENTO – Never in nearly a century of Department of Water Resources (DWR) recordkeeping has so much precipitation fallen in the northern Sierra in a water year. DWR reported today that 89.7 inches of precipitation – rain and snowmelt – has been recorded by the eight weather stations it has monitored continuously since 1920 from Shasta Lake to the American River basin. Today’s total surpassed the previous record of 88.5 inches recorded in the entirety of Water Year 1983. The region’s annual average is 50 inches. (04/13/2017)
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Flows To The Feather River Will Increase This Week
Oroville, Calif. – The Department of Water Resources (DWR) expects to resume use of the flood control spillway to discharge approximately 35,000 cubic feet per second (cfs) on April 14, 2017. Operations are dependent upon weather, lake inflow, and other factors.
Due to increased outflow to the Feather River, DWR advises the public to avoid the river. Anglers, boaters, and other river users are advised to be aware of the increase in flows, as the river will become deeper and swifter. (04/13/2017)
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Oroville Spillway Incident Update - Apr. 13
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 38,139 cfs. Current lake elevation is at 862.70 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,000 cfs. (04/13/2017)
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Oroville Spillway Incident Press Briefing
Oroville, Calif. – There will be a press briefing at 2 PM, April 13. It will be held at the Department of Water Resources (DWR) Oroville Field Division office, 460 Glen Drive Oroville, CA 95966.
Topics:
· Reoperation of flood control spillway
· Recovery Projects
(04/12/2017)
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Oroville Spillway Incident Update - Apr. 12
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 22,930 cfs. Current lake elevation is at 860.51 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,550 cfs. (04/12/2017)
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Oroville Spillway Incident Update - Apr. 11
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 26,245 cfs. Current lake elevation is at 858.89 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,750 cfs. (04/11/2017)
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Oroville Spillway Incident Update - Apr. 10
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 27,866 cfs. Current lake elevation is at 856.95 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,750 cfs. (04/10/2017)
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Oroville Spillway Incident Update - Apr. 9
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 26,051 cfs. Current lake elevation is at 854.36 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,750 cfs. (04/09/2017)
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Oroville Spillway Incident Update - Apr. 8
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 37,401 cfs. Current lake elevation is at 851.12 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 13,750 cfs. (04/08/2017)
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State Releases Plan to Make Water Conservation a Way of Life
SACRAMENTO – As Governor Edmund G. Brown Jr. ended the drought state of emergency in most of California today, state agencies released a long-term plan to better prepare the state for future droughts and make conservation a California way of life. (04/07/2017)
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Oroville Spillway Incident Update - Apr. 7
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 33,880 cfs. Current lake elevation is at 846.93 feet. Hyatt Powerplant is currently discharging 9,800 cfs. Total Feather River flow is 10,100 cfs. (04/07/2017)
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Oroville Spillway Incident Update - Apr. 6
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 13,262 cfs. Current lake elevation is at 844.77 feet. Hyatt Powerplant is currently discharging 10,000 cfs. Total Feather River flow is 10,400 cfs. (04/06/2017)
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DWR Releases A&E Report for Water Plan Update 2018
SACRAMENTO – The Department of Water Resources (DWR) has released a draft of the Assumptions and Estimates (A&E) Report that presents key assumptions and estimates, data and data sources, and companion plans that will be considered for the preparation of the California Water Plan Update 2018 (Update 2018). Several key technical components of Update 2018 are described in the report. (04/05/2017)
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Oroville Spillway Incident Update - Apr. 5
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 14,992 cfs. Current lake elevation is at 843.92 feet. Hyatt Powerplant is currently discharging 10,200 cfs. Total Feather River flow is 9,700 cfs. (04/05/2017)
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Oroville Spillway Incident Update - Apr. 4
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 16,843 cfs. Current lake elevation is at 843.13 feet. Hyatt Powerplant is currently discharging 10,500 cfs. Total Feather River flow is 9,000 cfs. (04/04/2017)
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Oroville Spillway Incident Update - Apr. 3
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 15,730 cfs. Current lake elevation is at 841.99 feet. Hyatt Powerplant is currently discharging 11,000 cfs. Total Feather River flow is 9,500 cfs. (04/03/2017)
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Oroville Spillway Incident Update - Apr. 2
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 17,763 cfs. Current lake elevation is at 841.25 feet. Hyatt Powerplant is currently discharging 11,500 cfs. Total Feather River flow is 10,000 cfs. (04/02/2017)
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Oroville Spillway Incident Update - Apr. 1
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 16,734 cfs. Current lake elevation is at 840.57 feet. Hyatt Powerplant is currently discharging 12,000 cfs. Total Feather River flow is 10,500 cfs. (04/01/2017)
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Oroville Spillway Incident - Mar. 31
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 17,981 cfs. Current lake elevation is at 839.89 feet. Hyatt Powerplant is currently discharging 13,000 cfs. Total Feather River flow is 11,500 cfs. (03/31/2017)
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Snowpack’s Water Content Remains Far above Average
SACRAMENTO – With every monthly measurement of the California snowpack this winter, the state’s rebound from the previous five years of drought becomes more evident. Today’s electronic readings from 95 sites in the Sierra Nevada show an average statewide snow water equivalent (SWE) of 45.8 inches, or 164 percent of the historical average for March 30 (27.9 inches). (03/30/2017)
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Oroville Spillway Incident Update - Mar. 30
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 12,995 cfs. Current lake elevation is at 839.09 feet. Hyatt Powerplant is currently discharging 11,700 cfs. Total Feather River flow is 10,000 cfs. (03/30/2017)
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Oroville Spillway Incident Update - Mar. 29
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 16,262 cfs. Current lake elevation is at 838.20 feet. Hyatt Powerplant is currently discharging 11,700 cfs. Total Feather River flow is 15,500 cfs. (03/29/2017)
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Oroville Spillway Incident Update - Mar. 28
The flood control spillway flow is currently at 0 cubic feet per second (cfs). Inflow is approximately 19,529 cfs. Current lake elevation is at 837.17 feet. Hyatt Powerplant is currently discharging 11,700 cfs. Total Feather River flow is 21,500 cfs. (03/28/2017)
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Oroville Spillway Incident Update - Mar. 27
The flood control spillway flow is currently at 40,000 cubic feet per second (cfs). Inflow is approximately 26,012 cfs. Current lake elevation is at 837.14 feet. Hyatt Powerplant is currently discharging 0 cfs. Total Feather River flow is 39,500 cfs. (03/27/2017)
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Oroville Spillway Incident Press Briefing
Oroville, Calif. – The Department of Water Resources will host a press briefing tomorrow, Monday, March 27 at 11 AM to provide an update on the following topics:
• Flood Control Spillway to Ramp Down to Zero Flow Process
• Update on Emergency Response and Recovery Activities (03/26/2017)
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Oroville Spillway Incident Update - Mar. 26
The flood control spillway flow is currently at 40,000 cubic feet per second (cfs). Inflow is approximately 24,657 cfs. Current lake elevation is at 839.78 feet. Hyatt Powerplant is currently discharging 2,000 cfs. Total Feather River flow is 41,500 cfs. (03/26/2017)
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Oroville Spillway Incident Update - Mar. 25
The flood control spillway flow is currently at 40,000 cubic feet per second (cfs). Inflow is approximately 32,583 cfs. Current lake elevation is at 842.22 feet. Hyatt Powerplant is currently discharging 2,000 cfs. Total Feather River flow is 42,500 cfs.
(03/25/2017)
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Next Manual Snow Survey at Phillips Set for March 30
SACRAMENTO – The Department of Water Resources (DWR) will host the news media on March 30 for this winter’s fourth manual snow survey at Phillips Station in the Sierra Nevada. Frank Gehrke, chief of the California Cooperative Snow Surveys Program, will begin the survey at 11 a.m. just off Highway 50 near Sierra-at-Tahoe Road, about 90 miles east of Sacramento. The survey will determine the water content of the snow at Phillips. (03/24/2017)
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Final Sign-Up Deadline Set for East Porterville Homeowners Who Want a Permanent Water Connection
SACRAMENTO – East Porterville homeowners eligible for a cost-free connection to a new sustainable water supply must sign up for the service by March 31, 2017 or miss this final opportunity to do so. After this date, no additional sign-ups will be accepted for the project. This final sign-up to meet the deadline will be hosted by City of Porterville Community Development Manager Julie Phillips from 9 a.m. to 4 p.m. at the Drought Resource Center, 185 South Leggett Street in East Porterville. All eligible home owners are urged to take advantage of this unique opportunity. (03/24/2017)
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Oroville Spillway Incident Update - Mar. 24
The flood control spillway flow is currently at 40,000 cubic feet per second (cfs). Inflow is approximately 32,183 cfs. Current lake elevation is at 844.31 feet. Hyatt Powerplant is currently discharging 4,750 cfs. Total Feather River flow is 45,300 cfs. (03/24/2017) (03/24/2017)
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DWR Announces Water-Energy Grants
SACRAMENTO – The Department of Water Resources (DWR) today announced nearly $18 million in grants to support agencies and organizations with projects that reduce greenhouse gas emissions and improve water and energy use efficiency. The awards will fund proposals under the 2016 Water-Energy Grant Program.
Fourteen organizations were awarded grants totaling $17,721,805. The smallest grant is $28,445 to the Long Beach Water Department for installation of efficient pre-rinse spray valves and faucet aerators for commercial food service locations. (03/23/2017)
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Lake Davis Fills as Anticipated, Spillway Outflows Begin
SACRAMENTO – The Department of Water Resources (DWR) said today boaters, anglers and residents downstream from Lake Davis in the Feather River watershed should be prepared for increased water flows and higher stream levels due to overflows from the Grizzly Valley Dam’s spillway. Water began flowing into the spillway March 21 for the first time in nearly 21 years.
The Grizzly Valley Dam spillway releases water from Lake Davis into Big Grizzly Creek and then to the Middle Fork Feather River. (03/23/2017)
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Oroville Spillway Incident Update - Mar. 23 AM
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 32,329 cfs. Current lake elevation is at 846.88’ feet. Hyatt Powerplant is currently discharging 5,200 cfs. Total Feather River flow is 45,700 cfs. (03/23/2017)
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Butte County Sheriff Lifts All Evacuation Advisories & Warnings Issued for the Spillway Incident
OROVILLE, Calif. (March 22, 2017) – Effective immediately, Butte County Sheriff Kory L. Honea has lifted all evacuation warnings and advisories for Butte County residents previously affected by the February 12th Oroville Dam spillway emergency evacuations.
“These past six weeks have been a very difficult and unsettling time for many individuals and families affected by the danger posed by fast-moving erosion to the emergency spillway,” said Sheriff Honea. “I couldn’t be more proud of this community and the countless unsung heroes who helped their neighbors and cared for those who needed it most.” (03/22/2017)
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Oroville Spillway Incident Update - Mar. 22
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 40,000 cfs. Current lake elevation is at 848.29 feet. Hyatt Powerplant is currently discharging 5,200 cfs. Total Feather River flow is 45,700 cfs. (03/22/2017)
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Final Sign-Up Deadline Set for East Porterville Homeowners Who Want a Permanent Water Connection
SACRAMENTO – East Porterville homeowners eligible for a cost-free connection to a new sustainable water supply must sign up for the service by March 31, 2017 or miss this final opportunity to do so. After this date, no additional sign-ups will be accepted for the project. This final sign-up to meet the deadline will be hosted by City of Porterville Community Development Manager Julie Phillips from 9 a.m. to 4 p.m. at the Drought Resource Center, 185 South Leggett Street in East Porterville. All eligible home owners are urged to take advantage of this unique opportunity. (03/21/2017)
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Oroville Spillway Incident Update - Mar. 21 AM
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 42,000 cfs. Current lake elevation is at 848.29 feet. Hyatt Powerplant is currently discharging 5,525 cfs. Total Feather River flow is 46,600 cfs. (03/21/2017)
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Oroville Spillway Incident Update - Mar. 20 AM
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 12,000 to 25,000 cfs. Current lake elevation is at 852.5 feet. Hyatt Powerplant is currently discharging 6,450 cfs. (03/20/2017)
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Releases from Lake Oroville Continue
Oroville, California – The Department of Water Resources (DWR) continues to operate the flood control spillway and Hyatt Powerplant to manage outflows from Lake Oroville.
DWR resumed operation of the flood control spillway at 11 a.m. Friday, March 17. Outflows from the spillway are approximately 40,000 cubic feet per second (cfs). Flows from Hyatt Powerplant are around 6,750 cfs. (03/19/2017)
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Oroville Spillway Incident - Mar. 19
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 16,000 to 23,000 cfs. Current lake elevation is at 856.3 feet. Hyatt Powerplant is currently discharging 6,750 cfs.
Approximately 1.25 million cubic yards of material have been removed from the debris pile to date.
The low flow section of the Feather River (the river channel through Oroville) is currently at 41,000 cfs. Total flows to the Feather River are approximately 48,000 cfs. (03/19/2017)
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Hyatt Powerplant Restarted
Oroville, California - The Department of Water Resources (DWR) continues to operate the flood control spillway at Lake Oroville and has restarted the Hyatt Powerplant.
“We continue to move forward after the reoperation of the main spillway,” said DWR Acting Director Bill Croyle. “Restarting the Hyatt Powerplant is another positive step in managing outflows from the lake.” DWR continues to closely monitor water levels around the plant to ensure its safe operation. (03/18/2017)
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Oroville Spillway Incident - Mar. 18
The flood control spillway flows are currently at 41,500 cubic feet per second (cfs). Inflows are approximately 11,000 to 24,000 cfs. Current lake elevation is at 860.5 feet. Hyatt Powerplant is currently discharging 7,550 cfs.
Approximately 1.25 million cubic yards of material have been removed from the debris pile to date. The low flow section of the Feather River (the river channel through Oroville) is currently at 43,000 cfs. Total flows to the Feather River are approximately 50,000 cfs.
(03/18/2017)
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Oroville Spillway Incident - Mar. 17
The flood control spillway flows are currently at 40,000 cubic feet per second (cfs). Inflows are approximately 16,000 to 21,000 cfs which has resulted in the lake rising to 863.9 feet elevation. Hyatt Powerplant is currently shut down.
Approximately 1.25 million cubic yards of material have been removed from the debris pile to date.
The low flow section of the Feather River (the river channel through Oroville) is currently at 33,000 cfs and will increase up to 43,000 cfs by this evening. Total flow to the Feather River will reach approximately 50,000 cfs. (03/17/2017)
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Lake Oroville Releases and Feather River Flows to Increase Friday
Oroville, California - As part of its ongoing management of water flows, the Department of Water Resources will increase outflows from Lake Oroville to the Feather River from the current 13,300 cubic feet per second (cfs) to 50,000 cfs between 11 AM and 2 PM on Friday, March 17 and then maintain those higher flows.
These flow levels will be achieved by reducing releases from the Hyatt Powerplant and then adding releases through the regular Oroville Dam gated flood control spillway. The Feather River elevation will rise between 10 and 15 feet early Friday afternoon, depending on channel geometry and location.
(03/16/2017)
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Oroville Spillway Press Briefing Tomorrow
Oroville, Calif. – The Department of Water Resources (DWR) will host a press briefing tomorrow, Friday, March 17 at 9 AM to provide an update on various topics including repairs to the flood control spillway and preparations to release water through that spillway. (03/16/2017)
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Oroville Spillway Incident - Mar. 16 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 16,000 to 20,000 cfs which has resulted in the lake rising from 862.6 feet to 863.1 feet elevation in the last 24 hours. Hyatt Powerplant is currently discharging 12,900 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 1.24 million cubic yards of material have been removed from the debris pile to date. (03/16/2017)
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DWR to Increase Dust Control Measures at Oroville Spillway Construction Zone
Oroville, California - The California Department of Water Resources (DWR) is working with the Butte County Air Quality Management District (AQMD) to protect workers and nearby residents during the debris-removal operation at the base of the Oroville Dam flood control spillway.
During recent air quality and sediment testing, natural-occurring asbestos was discovered in limited areas near the construction zone. Natural-occurring asbestos (NOA) is a common feature of California geology. DWR has safely and successfully worked with NOA using standard operating procedures. (03/16/2017)
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DWR Selects Forensic Team to Investigate Oroville Spillway Incident
As part of its response to the Oroville Spillway Incident, DWR has identified an independent forensic review team to investigate the causes of the spillway failures. DWR has selected the team in coordination with the United States Society of Dams (USSD) and the Association of State Dam Safety Officials (ASDSO). The forensic team consists of a core group with expertise in various engineering disciplines. The team was identified by March 15, 2017, as requested by the Federal Energy Regulatory Commission. Upon approval of the candidates, DWR will immediately engage these experts and develop a detailed process to guide the evaluation. DWR understands the urgency of finding preliminary results to ensure the design and construction of any modifications take the results into consideration. (03/15/2017)
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Oroville Spillway Incident Update - Mar. 15 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 14,000 to 20,000 cfs which has resulted in the lake rising from 862 feet to 862.6 feet elevation in the last 24 hours. Hyatt Powerplant is currently discharging 12,900 cfs. (03/15/2017)
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Oroville Spillway Incident - Mar. 14 Noon
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 14,000 to 20,000 cfs which has resulted in the lake rising from 861.4 feet to 862 feet elevation in the last 24 hours. Five units at the Hyatt Powerplant are currently running, allowing for a total outflow of 12,900 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 1,148,000 cubic yards of material have been removed from the debris pile to date. (03/14/2017)
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Flows to the Feather River to Increase This Week
Oroville, California - The Department of Water Resources (DWR) continues to increase flows to the Feather River. With inflows ranging from approximately 14,000 to 20,000 cubic feet per second (cfs), Lake Oroville has risen to 861.5 feet elevation. Hyatt Powerplant continues to discharge 12,900 cfs through the 5 operational turbine generators. Flows to the Feather River are being released through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The low flow section of the Feather River (the river channel through Oroville) is currently at 5,200 cfs. The total flow to the Feather River is currently 13,700 cfs. (03/13/2017)
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Oroville Spillway Incident - Mar. 13 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 14,000 to 20,000 cfs which has resulted in the lake rising from 860.9 feet to 861.4 feet elevation in the last 24 hours. Five units at the Hyatt Powerplant are currently running, allowing for a total outflow of 12,900 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 1,075,000 cubic yards of material have been removed from the debris pile to date. (03/13/2017)
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Flows to the Feather River to Increase This Week
Oroville, California – The Department of Water Resources (DWR) increased flows to the Feather River on March 11 to 13,000 cubic feet per second (cfs). These flows are being discharged from Lake Oroville through Hyatt Powerplant. Releases to the Feather River are expected to increase further on or around March 17, when DWR expects to resume using the flood control spillway to discharge 40,000 cfs to 50,000 cfs, with operations dependent upon weather, lake inflow and other factors. The flood control spillway was last used February 27, and work has been underway to reinforce and protect it from further erosion when it is used again. (03/12/2017)
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Oroville Spillway Incident Update - Mar. 12 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 13,000 to 19,000 cfs which has resulted in the lake rising from 860.5 feet to 860.9 feet elevation in the last 24 hours. Five units at the Hyatt Powerplant are currently running, allowing for a total outflow of 12,900 cfs. (03/12/2017)
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Increased Flows to Feather River Beginning Today at Noon
Oroville, California –The Department of Water Resources will increase flows from 11,000 to 13,000 cubic feet per second (cfs) to the Feather River starting today at noon.
With inflows at approximately 12,000 cfs to 18,000 cfs, Lake Oroville is at 860.5 feet elevation.
Crews working 24 hours per day have removed approximately 897,000 cubic yards of sediment and debris below the spillway.
Flows to meet environmental requirements downstream in the Feather River are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. (03/11/2017)
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Oroville Spillway Incident Update - Mar. 11 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 12,000 to 18,000 cfs which has resulted in the lake rising from 860.1 to 860.5 feet elevation in the last 24 hours. Five units at the Hyatt Powerplant are currently running, allowing for a total outflow of 12,900 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 897,000 cubic yards of material have been removed from the debris pile to date. (03/11/2017)
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Hyatt Powerplant Discharges 12,900 Cubic Feet Per Second
Oroville, California –Hyatt Powerplant’s five units are discharging a total of 12,900 cubic feet per second (cfs), which provides the Department of Water Resources an important, additional way to release water from Lake Oroville.
Lake Oroville inflows are approximately 10,000 cfs to 15,000 cfs, which has resulted in the lake rising from 859.7 feet to 860.1 feet elevation in the last 24 hours.
Approximately 803,000 cubic yards of sediment and debris below the spillway have been removed by crews working 24 hours per day. (03/10/2017)
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Oroville Spillway Incident Update - Mar. 10 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 10,000 to 15,000 cfs which has resulted in the lake rising from 859.7 feet to 860.1 feet elevation in the last 24 hours. All five operational units at the Hyatt Powerplant are currently running, allowing for a total outflow of 12,900 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 803,000 cubic yards of material have been removed from the debris pile to date. Work continues on the area below the emergency spillway. (03/10/2017)
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Oroville Spillway Incident Update - Mar. 9 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 10,000 to 15,000 cfs which has resulted in the lake rising from 858.8 feet to 859.7 feet elevation in the last 24 hours. All 5 operational units at the Hyatt Powerplant are currently running, allowing for a total outflow of 8,800 cfs. This situation will be monitored throughout the day to determine the efficiency and safety of excavation during flows. (03/09/2017)
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DWR to Continue Work on Debris Pile in Diversion Pool
Oroville, California - Over the past week, the Feather River watershed has experienced cool and dry weather. These weather conditions have allowed the Department of Water Resources’ (DWR) Oroville Emergency Response team to make tremendous progress removing approximately 650,000 cubic yards of debris from the Diversion Pool channel. The lake level will likely reach 860 feet later tonight.
Based on forecasted weather conditions, reservoir inflows, and the reoperation of the Hyatt Powerplant, DWR will delay the release of water over the Flood Control Spillway until approximately March 17. (03/09/2017)
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Road Repairs on Canyon Drive in Oroville
Oroville, California - The Department of Water Resources (DWR) has partnered with Caltrans to address roadways in Oroville and surrounding areas impacted by trucks and heavy machinery driving through Oroville in response to the Spillway Emergency. DWR, Caltrans, California Governor’s Office of Emergency Services, Butte County, and the City of Oroville are structuring agreements to address these damaged roads and have established regular hauling routes to minimize the impacts to the community. Canyon Drive in Oroville has sustained some of the most significant wear and will be repaired first. (03/08/2017)
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Oroville Spillway Incident Update - Mar. 08 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 20,000 cfs which has resulted in the lake rising from 857.4 feet to 858.8 feet elevation in the last 24 hours. A third Hyatt Powerplant unit was started yesterday, March 7 at 6pm allowing for a total flow of 5,330 cfs. This situation will be monitored throughout the day to determine the efficiency and safety of excavation during flows.
Contractors continue to remove sediment and debris below the spillway. (03/08/2017)
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Oroville Spillway Incident Update - Mar. 07 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 20,000 cfs which has resulted in the lake rising from 855.3 feet to 857.4 feet elevation in the last 24 hours. A second Hyatt Powerplant unit was started on Monday, March 6 at 6pm allowing for a total flow of 3,550 cfs. This situation will be monitored throughout the day to determine the efficiency and safety of excavation during flows.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 517,000 cubic yards of material have been removed from the debris pile to date. Work continues on the area below the emergency spillway. (03/07/2017)
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Notification from DWR about Increased Flows to Feather River Beginning Today at 10 AM
Oroville, California – The Department of Water Resources (DWR) will increase flows to the Feather River through Oroville starting today, Tuesday, March 7, 2017, at approximately 10:00 a.m. Due to increased outflow from Hyatt Power Plant, flows to the Feather River will also increase incrementally throughout the day. This will cause the river to become gradually deeper and swifter so all anglers, boaters, and other river users should be advised of these conditions. Additional flow increases to the Feather River are expected to occur over the next few days. (03/07/2017)
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Preparing Channel for Higher Flows, Work Progress Continues
Oroville, California – Crews working on widening the channel at the base of the main spillway have made significant progress towards the goal of creating enough space to allow Hyatt Power Plant to operate a full capacity. As of this morning, approximately 427,000 cubic yards of the estimated 1.7 million cubic yards of debris have been removed. Debris removal lowered the water level in the channel at the base of the spillway.
One unit at Hyatt Power Plant was restarted at 6pm last night, with additional units being planned to come online. (03/06/2017)
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Oroville Spillway Incident Update - Mar. 06 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 20,000 cfs which has resulted in the lake rising from 852.9 feet to 855.3 feet elevation in the last 24 hours. Flows to meet environmental requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. (03/06/2017)
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Work Progress Continues, Oroville Crews Moving Forward
Oroville, California – Crews working at the Lake Oroville Spillway are continuing to make progress on the project, nearly one week since flows from the spillway were halted to give excavators better access for debris removal.
“Our crews continue to make great progress on this 24/7 operation,” said DWR Acting Director Bill Croyle. “We’re seeing very positive results from their efforts.”
The wet weekend weather has not significantly interfered with debris removal or created a lake elevation concern. DWR will continue to monitor the weather forecast. (03/05/2017)
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Oroville Spillway Incident Update - Mar. 05 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 25,000 cfs which has resulted in the lake rising from 850.3 feet to 852.9 feet elevation in the last 24 hours. Flows to meet environmental requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 329,000 cubic yards of material have been removed from the debris pile to date. (03/05/2017)
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Hyatt Power Plant at Lake Oroville Update
Oroville, California – After a successful restart of the Hyatt Power Plant on Friday, a temporary shutdown began around 10 am today so that the water channel can be deepened for the plant to reach its full capacity. The shutdown is expected to last approximately 1-2 days. The reoperation of the power plant gives the Department of Water Resources (DWR) an important, additional way to release water from the reservoir. (03/04/2017)
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Oroville Spillway Incident Update - Mar. 04 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 10,000 to 18,000 cfs which has resulted in the lake rising from 848.3 feet to 850.3 feet elevation in the last 24 hours. Flows to meet fishery requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 216,000 cubic yards of material have been removed from the debris pile to date. (03/04/2017)
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Spillway Incident Press Briefing
Oroville, Calif. – There will be a press briefing at noon today, March 3, 2017. It will be held at the Department of Water Resources Oroville Field Division office, 460 Glen Drive Oroville, CA 95966. Topics of the day:
· Reoperation of Hyatt Power Plant · Hydrology and upcoming weather
For those unable to attend, a conference line has been established. Please call (866) 508-9046 and enter the following code: 5743919. This is for listening purposes only. No questions will be taken over the conference line. (03/03/2017)
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Oroville Spillway Incident Update - Mar. 03 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 20,000 cfs which has resulted in the lake rising from 845.6 feet to 848.3 feet elevation in the last 24 hours. Flows to meet fishery requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 168,000 cubic yards of material have been removed from the debris pile to date. (03/03/2017)
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OROVILLE SPILLWAY PROGRESS CONTINUES
Oroville, California – Crews removing a debris pile continue to make rapid progress three days after the Department of Water Resources (DWR) halted flows down the damaged Oroville Dam flood control spillway. Debris removal at the base of the spillway will help lower the water level in the channel so the Hyatt Power Plant can resume operation. The power plant will give DWR an additional way to release water from the reservoir. (03/02/2017)
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Oroville Spillway Incident Update - Mar. 02 AM
The flood control spillway flows remain at 0 cubic feet per second (cfs). Inflows are approximately 15,000 to 20,000 cfs which has resulted in the lake rising from 843 feet to 845.6 feet elevation in the last 24 hours. Flows to meet fishery requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
Contractors continue to remove sediment and debris below the spillway. This operation will continue 24 hours per day. Approximately 110,000 cubic yards of material have been removed from the debris pile to date. (03/02/2017)
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Progress at Oroville Spillway
Crews Continue Debris Removal
Oroville, California – Crews removing a debris pile, estimated at roughly 1.5 million cubic yards, continue to make progress two days after the Department of Water Resources (DWR) halted flows down the damaged flood control spillway. Debris removal at the base of the spillway will help lower the water level in the channel, key to reoperation of Hyatt Power Plant. The power plant will give DWR an additional way to release water from the reservoir. (03/01/2017)
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Snowpack’s Water Content Remains Far above Average
SACRAMENTO – The Sierra Nevada snowpack continues to build during one of the wettest winters in California’s recorded history. Today’s manual snow survey by the Department of Water Resources (DWR) at Phillips Station in the Sierra Nevada found a snow water equivalent (SWE) of 43.4 inches. February’s Phillips survey found 28.0 inches of SWE, and January’s reading was 6.0 inches. The March 1 average at Phillips is 24.3 inches.
SWE is the depth of water that theoretically would result if the entire snowpack melted instantaneously. That measurement is more important than depth in evaluating the status of the snowpack. On average, the snowpack supplies about 30 percent of California’s water needs as it melts in the spring and early summer. (03/01/2017)
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Oroville Spillway Incident Update - Mar. 1 AM
The flood control spillway flows remain at O cubic feet per second (cfs). Lake levels have risen 3 feet to elevation 843 feet since the spillway gates were closed. Flows to meet fishery requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs. (03/01/2017)
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Work Continues at Oroville Spillway - Crews Focus on Debris Removal, Restoring Power Plant Function
Oroville, California – One day after the Department of Water Resources (DWR) halted flows down the damaged flood control spillway, crews continue removing a debris pile estimated at roughly 1 million cubic yards at the base of the spillway. Debris removal will help lower the water level in the channel that leads to Hyatt Power Plant. Bringing down the water height in that channel is a key step to restoring function at the power plant, which will give DWR another means of releasing water from the reservoir. (02/28/2017)
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Oroville Spillway Incident Update - Feb. 28 AM
The Department of Water Resources (DWR) successfully curtailed flows from the flood control spillway yesterday from 50,000 cubic feet per second (cfs) to 0 cfs. Lake levels have risen 2 feet to elevation 840 feet since the gates were closed. Flows to meet fishery requirements are being met by releases through the Thermalito Diversion Dam and Thermalito Afterbay River Outlet. The total flow to the Feather River remains at 2500 cfs.
As the spillway flows decreased, the enormity of the debris pile below the flood control spillway was revealed. Contractors have staged large excavators and several barges to begin removing sediment and debris. Additional heavy equipment was immediately mobilized to assist in the removal process. (02/28/2017)
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Oroville Spillway Incident Update - Feb. 27 AM
At 6:45 a.m. today, the Department of Water Resources (DWR) began gradually ramping down outflows from the Oroville Reservoir. Flows from the flood control spillway will be reduced from 50,000 cubic feet per second throughout the day and eventually reach zero in the afternoon. As flows are reduced, DWR will monitor the status of the dam, spillways, and related structures to ensure their continued safety and stability. Flows will be reduced gradually to minimize risk to downstream levees. Through use of water stored in the Diversion Pool and Thermalito Forebay and Afterbay, flows necessary to meet fishery requirements in the Feather River downstream of the dam will be maintained. (02/27/2017)
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Spillway Press Briefing on Reduced Outflows Monday Morning at 10:00 AM
Oroville, California - Tomorrow morning at 6:45 AM, the Department of Water Resources (DWR) will begin gradually ramping down outflows from the Oroville Reservoir. Flows from the flood control spillway will be reduced from 50,000 cubic feet per second (cfs) throughout the day and eventually reach zero in the afternoon. (02/26/2017)
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Oroville Spillway Incident Update - Feb. 26 AM
The Department of Water Resources (DWR) maintains the outflow from the Oroville Dam flood control spillway at 50,000 cfs. This rate of flow remains consistent with DWR’s established plan to continually manage lake levels, water flow, and support construction activities. Lake levels have decreased to 843 feet, 58 feet below the maximum level of the reservoir. Outflows continue to exceed inflows.
Work continues on the area below the emergency spillway, access roads, and various eroded areas created by emergency spillway runoff. Construction crews are now installing foundations for check structures that would slow water flows should the emergency spillway be required. Barges have been assembled and equipment is being staged for debris removal below the flood control spillway in the Diversion Pool. This work will continue 24 hours a day. (02/26/2017)
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Road Repairs on Canyon Drive in Oroville
Oroville, California - The Department of Water Resources (DWR) has partnered with the California Department of Transportation (Caltrans) to address roads in Oroville and surrounding areas impacted by the trucks and heavy machinery driving through Oroville in response to the Spillway Emergency. DWR, Caltrans, California Governor’s Office of Emergency Services, Butte County, and the City of Oroville are structuring agreements to address these damaged roads and are establishing regular hauling routes to minimize the impacts to the community. Canyon Drive has sustained some of the most significant wear and will be repaired first. (02/25/2017)
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Oroville Spillway Incident Update - Feb. 25 AM
The Department of Water Resources reduced the outflow from the Oroville Dam flood control spillway to 50,000 cfs, in an effort to support debris removal from the diversion pool, located near the spillway. This rate of flow remains consistent with DWR’s established plan to continually manage lake levels, water flow, and support construction activities. Lake levels have decreased to 846 feet, 55 feet below the maximum level of the reservoir. Outflows are once again exceeding inflows. (02/25/2017)
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Invasive Mussel Veligers Detected in the Santa Ana Pipeline; State Conducting Further Testing
SACRAMENTO – Mussel veligers (microscopic, free-floating larval life stage) this month were detected in water samples collected at the North Park valve of the Santa Ana Pipeline, which transports water from Silverwood Lake, San Bernardino County, to Lake Perris, Riverside County. Further testing is under way by the California Department of Fish and Wildlife (CDFW) to confirm the findings and determine if the veligers are quagga mussels or zebra mussels. (02/24/2017)
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Oroville Spillway Incident Update - Feb. 24 AM
The Department of Water Resources reduced the outflow from the Oroville Dam flood control spillway to 50,000 cfs, in an effort to support debris removal from the diversion pool, located near the spillway. This rate of flow remains consistent with DWR’s established plan to continually manage lake levels, water flow, and support construction activities. Lake levels have decreased to 849 feet, 52 feet below the maximum level of the reservoir. Outflows are once again exceeding inflows. (02/24/2017)
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DWR to Continue Outflow Reduction
Oroville, Ca. At 12:00 PM, the Department of Water Resources will again initiate the reduction of outflow from the Oroville Dam flood control spillway, incrementally from 60,000 cfs to 50,000 cfs, in an effort to support debris removal from the diversion pool, located near the spillway.
Once flows have been reduced, DWR will hold, monitor, and evaluate whether to reduce outflows further to support construction efforts.
The continued success of lowering reservoir levels has provided room to accommodate incoming water and lake levels will continue to fall. (02/23/2017)
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Oroville Spillway Incident Update - Feb. 23 AM
The Department of Water Resources continues to discharge 60,000cfs of water from the Oroville Dam flood control spillway. This rate of flow remains consistent with DWR’s established plan to continually manage lake levels, water flow, and support construction activities. Lake levels have decreased to 851 feet, 50 feet below the maximum level of the reservoir. Outflows are once again exceeding inflows.
Work continues on the area below the spillway, the monoliths, access roads, and various eroded areas created by emergency spillway runoff. Rock, aggregate, and cement slur (02/23/2017)
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Oroville Spillway Incident Update - Feb. 22 PM
The Department of Water Resources continues to discharge 60,000cfs of water from the Oroville Dam flood control spillway. Lake levels rose slightly to 852 feet, 49 feet below the maximum level ofthe reservoir. Inflows exceeded outflows during the current storm system but are forecasted to be below outflows in the next 24 hours.
This rate of flow remains consistent with DWR’s established plan objectives to continuallymanage lake levels, water flow, and support construction activities. (02/22/2017)
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Manual Snow Survey at Phillips Scheduled for March 1
SACRAMENTO – The Department of Water Resources (DWR) will host the news media on March 1 for this winter’s third manual snow survey at Phillips Station in the Sierra Nevada. Frank Gehrke, chief of the California Cooperative Snow Surveys Program, will begin the survey at 11 a.m. just off Highway 50 near Sierra-at-Tahoe Road, about 90 miles east of Sacramento. The survey will determine the water content of the snow at Phillips. (02/22/2017)
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Oroville Spillway Incident Update - Feb. 22 AM
The Department of Water Resources continues to discharge 60,000cfs of water from the Oroville Dam flood control spillway. Lake levels rose slightly to 853 feet, 48 feet below the maximum level of the reservoir. Inflows exceeded outflows during the current storm system but are forecasted to be below outflows in the next 24 hours. (02/22/2017)
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Oroville Spillway Incident Update - Feb. 21 AM
The Department of Water Resources will maintain outflow, from the Oroville Dam flood control spillway, at 60,000cfs throughout the day. This rate of flow is consistent with DWR’s established plan objectives to continually manage lake levels, water flow, and support construction activities. (02/22/2017)
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Oroville Spillway Incident Update - Feb. 21 PM
The Department of Water Resources will maintain outflow, from the Oroville Dam flood control spillway, at 60,000cfs. This rate of flow is consistent with DWR’s established plan objectives to continually manage lake levels, water flow, and support construction activities. (02/22/2017)
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DWR Picks Board of Experts on Oroville Spillway Situation
DWR has chosen five experts to form an Independent Board of Consultants to assess operations, conditions, and risk reduction actions being taken at Lake Oroville in response to erosion damage to Oroville Dam’s main spillway that began February 7. DWR also asks two national dam associations to empanel an independent team to investigate the possible causes of the spillway damage. These actions are described in a letter to the Federal Energy Regulatory Commission. (02/21/2017)
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Oroville Spillway Incident Update - Feb. 20 PM
The Department of Water Resources maintained outflow, from the Oroville Dam flood control spillway, at 60,000cfs throughout the day. This rate of flow is consistent with DWR’s established plan objectives to continually manage lake levels, water flow, and support construction activities. (02/20/2017)
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Oroville Spillway Incident Update - Feb. 20 AM
The Department of Water Resources increased outflow from the Oroville Dam flood control spillway yesterday, from 55,000cfs to 60,000cfs, in anticipation of the expected increase in inflows.
This proactive measure is typical of normal flood control operations and is in anticipation of forecasted weather conditions. The increase is temporary and is expected to better balance water flow in and out of the reservoir.
These measures are consistent with DWR’s established plan objectives to continually manage lake levels, water flow, and support construction activities. (02/20/2017)
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Oroville Spillway Incident Update - Feb. 19 PM
This afternoon, the Department of Water Resources increased outflow from the Oroville Dam flood control spillway, from 55,000cfs to 60,000cfs.
This proactive measure is typical of normal flood control operations and is in anticipation of forecasted weather conditions. The increase is temporary and is expected to better balance water flow in and out of the reservoir.
These measures are consistent with DWR’s established plan objectives to continually manage lake levels, water flow, and support construction activities. (02/19/2017)
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Oroville Spillway Incident Update - Feb. 19 AM
Today, flow from the Oroville Dam Flood Control Spillway will remain at 55,000 cfs and continue to outpace the inflow encountered. The reduction in flow has allowed assessment teams to view debris buildup and dredge debris piles below the flood control spillway. (02/19/2017)
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Oroville Spillway Incident Update - Feb. 18 PM
Today flows were reduced to 55,000 cfs and continued to outpace the inflow encountered. The reduction in flow allowed assessment teams to view debris buildup and dredge debris piles below the flood control spillway. (02/19/2017)
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Oroville Spillway Incident Update - Feb. 18 AM
Lake elevations continue trending downward and have fallen more than 45 feet from the height of the emergency spillway. Outflows continue to outpace flow into the reservoir and the goal of achieving a reservoir depth of 850 feet remains a priority. As runoff flows into the reservoir, water levels will likely fluctuate but will remain within acceptable and typical depths during times of storm activity. (02/18/2017)
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Oroville Spillway Incident Update - Feb. 17 PM
As of this evening, 70,000 cubic feet per second (cfs) of water is being released from the flood control spillway and inflows into the reservoir are 30,000 cfs. Currently, the elevation of the lake is slightly more than 858 feet; over 40 feet below the height of the emergency spillway.
Despite current inclement weather, DWR construction crews continue to repair erosion and remove debris from below the emergency spillway. Rock, aggregate and cement slurry continue to be placed into areas affected by erosion after use of the emergency spillway. (02/18/2017)
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DWR To Continue Outflow Reduction - Feb. 17 PM
Oroville, Ca.-At 1:00 PM this afternoon, the Department of Water Resources will once more begin reducing outflow from the Oroville Dam flood control spillway incrementally from 80,000 cfs to 70,000 cfs to support the removal of debris from the diversion pool located near the spillway. (02/17/2017)
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Oroville Spillway Incident Update - Feb. 17 AM
Despite current inclement weather, DWR construction crews continue to repair erosion below the emergency spillway. Rock, aggregate and cement slurry are being used to repair and backfill the affected areas. (02/17/2017)
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Oroville Spillway Incident Update - Feb. 16 AM
This morning, the lake level sits at 32 feet below the emergency spillway height. Despite weather conditions, crews continue to work around the clock and are making progress with emergency repairs.
Barges and cranes have been mobilized to remove debris and sediment from the diversion pool. These efforts are designed to restore the normal flow of water into the diversion pool and through the Hyatt power plant.
100,000 cfs of water continues to flow through the flood control spillway in an effort to accommodate anticipated inflow from upcoming storms. These storms are forecasted to bring colder temperatures and inflows are anticipated to increase to 45,000 cfs. However, lake levels will continue to decrease. (02/17/2017)
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Oroville Spillway Incident Update - Feb. 16 PM
DWR construction crews continue work to remediate emergency spillway erosion. Water flow from the flood control spillway was reduced incrementally from 100,000 to 80,000 cfs today. This reduction allowed crews to begin removing debris from the diversion pool below the spillway. The level of the reservoir has been reduced by 36 feet to accommodate inflow from upcoming storms. Inflows from forecasted inclement weather are not expected to exceed current outflows. (02/17/2017)
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Oroville Spillway Incident Update - Feb. 15 pm
Today, lake levels fell an additional five feet, and are now 26 feet below the emergency spillway. Crews continue to work around the clock, regardless of weather conditions, to make emergency repairs. Barges and cranes are being mobilized to remove debris and sediment from the diversion pool.
100,000 cfs of water continues to flow through the flood control spillway in an effort to accommodate anticipated inflow from upcoming storms. These storms are forecasted to bring colder temperatures and inflows are anticipated to increase to 45,000 cfs. However, lake levels will continue to decrease throughout the storm activity. (02/17/2017)
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Oroville Spillway Incident Update - Feb. 15 AM
The Department of Water Resources continues to reinforce the emergency spillway. More than 125 construction crews are working around the clock, and are placing 1,200 tons of material on the spillway per hour, using helicopters and heavy construction equipment. Forecasted winds may force workers to temporarily suspend the use of aircraft however, the bulk of the transportation and placement of aggregate is being accomplished with the use of heavy trucks. The construction area is being continually monitored by engineers from the state and federal governments from the ground and with the use of drones. (02/15/2017)
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Oroville Spillway Incident Update - Feb. 14 PM
The Department of Water Resources continues to reinforce the emergency spillway. More than 125 construction crews are working around the clock, and are placing 1,200 tons of material on the spillway per hour using helicopters and heavy construction equipment. The area is being continually monitored from the ground and by the use of drones. (02/14/2017)
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Oroville Spillway Incident Update - Feb. 14 AM
The Department of Water Resources continues to reinforce the emergency spillway. Crews worked through the night, adding rock and material to areas of erosion. These activities are being undertaken 24 hours a day and are supported by helicopters and heavy construction equipment. There is no water flowing over the emergency spillway. (02/14/2017)
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Oroville Spillway Incident Update - Feb. 13 PM
The Department of Water Resources advises that the primary spillway continues to flow at 100,000 cfs and lake levels have dropped to 894’ feet. After evaluating the erosion on the emergency spillway, a plan was put in place to prevent further erosion. Utilizing trucks and helicopters, crews moved large rocks and gravel to fill erosion on the emergency spillway. DWR staff continues to inspect and evaluate the emergency and primary spillways for further erosion. (02/13/2017)
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Oroville Spillway Incident Update - Feb. 13 AM
The Department of Water Resources advises that at 10pm last night, the reservoir receded to below 901 feet and flows over the emergency spillway halted. Outflow from the primary spillway remains at 100,000 cfs. DWR staff continues to insect and evaluate the emergency and primary spillways for further erosion. Crews are actively removing debris and sediment from waterways, in an effort to reactivate the Hyatt power plant. (02/13/2017)
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CONCERN AT OROVILLE SPILLWAY TRIGGERS EVACUATION ORDERS
Oroville, Ca — Based on information received from the California Department of Water Resources (DWR) and the incident command team managing Lake Oroville, counties and cities near Lake Oroville and the surrounding area issued evacuation orders for residents. The concern is that erosion at the head of the auxiliary spillway threatens to undermine the concrete weir and allow large, uncontrolled releases of water from Lake Oroville. Those potential flows could exceed the capacity of downstream channels. (02/12/2017)
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Spillway Press Briefing at Noon in Oroville
What: Press conference to provide updates on the Lake Oroville main and auxiliary spillways and related conditions.
When: Sunday, February 12, 2017 at 12:00 p.m.
Where: State Parks Headquarters, 400 Glen Drive Oroville, CA 95966.
Conference call line: (866) 508-9046
Passcode: 5743919
Live Periscope will be offered through DWR’s Facebook and Twitter pages. (02/12/2017)
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Water Continues Down Oroville Auxiliary Spillway
Oroville, Calif. – The relatively light flow of water that began washing into Lake Oroville’s auxiliary spillway Saturday morning is expected to continue flowing for the next few days. Total releases from the reservoir do not threaten the dam or downstream communities and fall well within the capacity of the Feather River and other downstream channels. (02/11/2017)
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Oroville Dam’s Auxiliary Spillway Begins Flowing
Oroville, California – The California Department of Water Resources (DWR) said the auxiliary spillway at Lake Oroville started spilling water at 8:00 am today. This occurred when the lake level exceeded 901 feet elevation above sea level. DWR officials said the flow over the auxiliary spillway will range between 5,000 and 10,000 cubic feet per second (cfs). This will combine with the flow from the primary spillway, which is currently at 55,000 cfs, and this will result in a total flow to the Feather River between 60,000 to 70,000 cfs. (02/11/2017)
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Water Expected to Flow into Lake Oroville Emergency Spillway Soon
Oroville, Calif. -- Lake Oroville is expected to rise this morning to the level that allows water to flow down an emergency spillway and into the Feather River, according to the California Department of Water Resources (DWR). The volume of water is expected to pose no flood threat downstream and should remain well within the capacity of the Feather River and other channels to handle. Oroville Dam itself remains safe, and there is no imminent threat to the public. (02/11/2017)
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Oroville Dam Emergency Spillway Expected to Be Used as Soon as Early Saturday 
SACRAMENTO – As it manages storm inflow to Lake Oroville with a main spillway damaged by erosion, the California Department of Water Resources (DWR) announced late Thursday that the reservoir’s emergency spillway likely will be used, perhaps as soon as the early hours of Saturday. (02/10/2017)
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Lake Oroville Releases Increase
SACRAMENTO – While there is still a chance the emergency spillway at Lake Oroville may be used this weekend, reservoir operators say that if current releases from the nearly full reservoir can be maintained, it is less likely the lake will rise to the point where water flows into the emergency spillway channel. Whether the emergency spillway is used or not, Oroville Dam itself is sound and there is no imminent threat to the public, said California Department of Water Resources (DWR) Acting Director William Croyle. (02/10/2017)
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Lake Oroville Releases Slowed to Avoid Erosion
SACRAMENTO – Reservoir operators at Lake Oroville plan to make a slight reduction of releases from a damaged spillway in order to prevent erosion along the north side of the spillway from compromising nearby power line towers.  The California Department of Water Resources (DWR) will slow the releases down the gated spillway from 65,000 cubic feet per second (cfs) to 55,000 cfs. (02/10/2017)
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46 of 48 Gates Now Opened on Sacramento Weir
SACRAMENTO – The Department of Water Resources (DWR) opened additional gates on the Sacramento River, bringing the total up to 46 of 48 gates opened. This will accommodate flows coming down the Sacramento River into the Yolo Bypass, allowing additional flows from the American River as releases from Folsom Lake are increased. Opening additional gates allows DWR to maintain a consistent level on the Sacramento River at the I Street gauge. Each gate allows 1,500 cubic feet per second of water to enter the Yolo Bypass from the Sacramento and American rivers. These flood releases relieve pressure on the Sacramento River and reduce the risk of urban flooding in Sacramento. (02/10/2017)
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Sacramento Weir to Be Opened at 11 p.m.
SACRAMENTO – Due to forecast conditions, the California Department of Water Resources will begin opening gates on the Sacramento Weir as early as late evening on Wednesday, February 8, 2017 to manage downstream flows in the Sacramento River. (02/09/2017)
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DWR Increases Oroville Spillway Flows
Oroville, Calif. – California Department of Water Resources (DWR) personnel and a host of collaborating agencies continued to monitor Lake Oroville spillway flows through the night. As expected, the overnight flow rate of 20,000 cubic feet per second (cfs) caused additional lower spillway erosion. Spillway flow was stopped again for a few hours this morning to allow engineers to evaluate the integrity of the structure. (02/09/2017)
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DWR Conducts Test To Assess Spillway
Oroville – To help determine an appropriate level of flow down the damaged spillway at Oroville Dam, the California Department of Water Resources (DWR) will release up to 20,000 cubic feet per second (cfs) this afternoon, then ramp down the flows and assess any further damage to the eroded spillway. The test flow will run for two hours, perhaps as soon as late this afternoon. (02/08/2017)
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NASA Report: San Joaquin Valley Land Continues to Sink
SACRAMENTO – New NASA radar satellite maps prepared for the California Department of Water Resources (DWR) show that land continues to sink rapidly in certain areas of the San Joaquin Valley, putting state and federal aqueducts and flood control structures at risk of damage. (02/08/2017)
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DWR Halts Flows Down Oroville Dam Spillway
Oroville – The Department of Water Resources has temporarily suspended flows from the Oroville Dam spillway to investigate concrete erosion on the bottom half of the spillway. There is no anticipated threat to the dam or the public.
Approximately 20 percent of Lake Oroville remains empty, and DWR officials say there is sufficient storage room to capture the inflow of the rain showers expected through the rest of the week. The reservoir, 3.5 million acre-feet at full capacity, now holds 2.8 million acre-feet, as prescribed by flood control operations. (02/07/2017)
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Draft Environmental Document for Fremont Weir Adult Fish Passage Modification Project
SACRAMENTO, Calif. – The California Department of Water Resources (DWR) and U.S. Bureau of Reclamation (Reclamation) have released for public review the draft Initial Study and Environmental Assessment (IS/EA) for the proposed Fremont Weir Adult Fish Passage Modification Project, located in the northern portion of the Yolo Bypass, approximately 8 miles northeast of Woodland in Yolo County. (02/03/2017)
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Snowpack Shows Big One-Month Gain
SACRAMENTO – Today’s Department of Water Resources (DWR) manual snow survey at Phillips Station in the Sierra Nevada range found a snow water equivalence of 28.1 inches, a significant increase since the January 3 survey, when just 6 inches was found there. The average as measured at Phillips since 1964 is 11.3 inches. (02/02/2017)
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The Year’s Second Snow Survey on February 2
SACRAMENTO – The Department of Water Resources (DWR) will host the news media on February 2 for the second manual snow survey at Phillips Station in the Sierra Nevada. Frank Gehrke, chief of the California Cooperative Snow Surveys Program, will begin the survey at 11 a.m. just off Highway 50 near Sierra-at-Tahoe Road about 90 miles east of Sacramento. The survey will determine the water content of the snow at Phillips. (01/26/2017)
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State Water Project Allocation Increased
SACRAMENTO – As winter storms continue to fill reservoirs and boost the snowpack, the Department of Water Resources (DWR) today increased its estimate of this year’s State Water Project (SWP) supply from 45 to 60 percent of most requests. (01/18/2017)
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DWR Increasing Flows to Feather River
SACRAMENTO -- The Department of Water Resources (DWR) is increasing flows to the Feather River in hourly increments between 2 p.m. and 4 p.m. today. Total Lake Oroville outflow will increase from 13,300 cubic feet per second (cfs) to 20,000 cfs. Flow will be routed through Hyatt Powerplant and also through the Oroville Dam Spillway. Spillway flows will reach 10,000 cfs. (01/13/2017)
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DWR Increasing Flows to Feather River
SACRAMENTO -- The Department of Water Resources (DWR) is increasing flows to the Feather River in hourly increments between 2 p.m. and 7 p.m. today. Total Lake Oroville outflow will increase from 5,000 cubic feet per second (cfs) to 13,300 cfs. All flow will be routed through Hyatt Powerplant, so no Oroville Dam Spillway flows will occur. (01/13/2017)
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Water Scarce to Recharge Groundwater Basins,
SACRAMENTO, Calif. – A first-of-its-kind analysis of California’s water resources shows that bringing local groundwater basins into sustainable balance -- as state law demands – will require investments and innovations in integrated water management including conservation, storm water capture, recycling, desalination, water transfers, diversion, conveyance and storage. (01/12/2017)
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More Gates to Be Opened on Sacramento Weir
SACRAMENTO – The Department of Water Resources (DWR) will open up to 6 additional gates on the Sacramento Weir this afternoon. This will provide more outlets onto the Yolo Bypass for flows coming down the American river as releases from Folsom Lake are increased. (01/10/2017)
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Draft Central Valley Flood Protection Plan Update Released
SACRAMENTO -- The Central Valley Flood Protection Board (CVFPB) has released a draft update to the Central Valley Flood Protection Plan (Plan) for public review. The public is invited to submit comments on the update, as well as an accompanying draft Supplemental Program Environmental Impact Report (SPEIR), through March 31, 2017. Consistent with Governor Edmund G. Brown Jr.’s California Water Action Plan, the update emphasizes the need for long-term multi-benefit projects rather than single-purpose flood management projects. For example, both the Plan and draft update include strategies to integrate and improve ecosystem functions with flood risk reduction projects. (01/05/2017)
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DWR Publishes Best Management Practices for the Sustainable Management of Groundwater
SACRAMENTO – Local agencies and Groundwater Sustainability Agencies (GSAs) can now reference DWR’s Best Management Practices (BMPs) as they develop their plans to sustainably manage California’s groundwater basins. DWR today published the BMPs, a series of five documents that provide regulatory clarification, technical guidance, and general examples to assist GSAs and inform local agencies and stakeholders. DWR was required to publish BMPs on its website by January 1, 2017, as required by the Sustainable Groundwater Management Act (SGMA). (01/03/2017)
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Snowpack’s Statewide Water Content Is below Average
SACRAMENTO – Today’s Department of Water Resources (DWR) manual snow survey at Phillips Station in the Sierra Nevada range found a snow water equivalence of 6 inches, which is 5.3 inches less than the average early-January snow water equivalence of 11.3 inches as measured at Phillips since 1964. (01/03/2017)
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