IEP Data and Metadata
The Interagency Ecological Program (IEP) monitoring studies have collected hydrodynamic, water quality, and biological data in the San Francisco Bay-Delta since 1959.
Over the decades, surveys have been added or modified in both geographic scope or in protocol. Surveys vary with respect to their period of record, their geographic and seasonal coverage, and in the types of the data they collect.
The goals of this page are to provide an overview of IEP surveys and the diversity of data they collect, and to provide direct access to metadata and data for all possible surveys.
Table 1 provides an overview of existing long-term monitoring programs of IEP and illustrates the data types currently collected by each survey. Tables 2-4 provide detailed information and links to metadata and data for individual surveys focused on water quality, phytoplankton, invertebrates, and fish. Fish surveys found in Table 4 include additional data types collected along-side fish sampling, such as discrete water quality and zooplankton.
Table 1.
|
Program |
IEP PEN |
Hydrodynamics |
Discrete Water Quality |
Continuous Water Quality |
Phytoplankton |
Zooplankton |
Benthic Invertebrates |
Fish |
|---|---|---|---|---|---|---|---|---|
|
003 |
|
X |
|
|
X |
|
X |
|
|
007 |
|
X |
|
|
X |
|
X |
|
|
011/ 012 |
|
X |
|
|
|
X |
X |
|
|
029 |
|
X |
X |
|
|
|
|
|
|
030 |
X |
|
X |
|
|
|
|
|
|
033 |
|
X |
|
|
X |
|
X |
|
|
053/301/302 |
|
X |
|
|
|
|
X |
|
|
Environmental Monitoring Program |
072/077 |
|
X |
X |
X |
X |
X |
|
|
San Joaquin River Dissolved Oxygen Monitoring |
073 |
|
X |
X |
|
|
|
|
|
Knights Landing Juvenile Salmon |
074 |
|
X |
|
|
|
|
X |
|
088 |
|
X |
|
|
|
|
X |
|
|
093 |
|
X |
|
|
X |
|
X |
|
|
096 |
|
X |
|
|
|
|
X |
|
|
Operation of Thermograph Stations |
104 |
|
X |
|
|
|
|
|
|
002 |
|
X |
|
|
|
|
X |
|
|
005 |
|
X |
|
|
|
|
X |
|
|
Yolo Bypass Fisheries Monitoring Survey |
047 |
|
X |
X |
X |
X |
|
X |
|
Liberty Island Fish Survey |
279 |
|
X |
|
|
X |
|
X |
Table 2. Hydrodynamic and Water Quality Surveys
|
Program |
Agency |
Contact Information |
Descriptor |
Start Year |
Sample Site Map (and shapefiles if available) |
Metadata Link |
Download Data |
|---|---|---|---|---|---|---|---|
|
United States Geological Survey (USGS) |
Cathy Ruhl |
Real-time flow and water-quality |
1988 |
||||
|
USGS |
Maureen Downing-Kunz |
Real-time, continuous water-quality |
1989 |
||||
|
Environmental Monitoring Program: Discrete Water Quality |
Department of Water Resources (DWR) |
Jenna Rinde |
Physical and chemical constituents collected monthly |
1975 |
|||
|
Continuous Water Quality |
DWR |
Scott Waller |
D-1641 compliance stations-water quality data is collected every 15-minutes and telemetered to CDEC |
1978 |
Contact |
||
|
DWR
|
Rolf Frankenback |
Water quality data is collected every 15-minutes and telemetered to CDEC |
1998 |
Map and coordinates provided in metadata |
|||
|
USGS |
|
|
|
See above under Delta Flow Network |
|||
|
United States Bureau of Reclamation (USBR)
|
|
|
|
|
|
||
|
National Oceanic and Atmospheric Administration (NOAA) |
|
|
|
|
|
|
|
|
San Joaquin River Dissolved Oxygen Monitoring |
DWR |
Jenna Rinde |
Dissolved oxygen data is collected bimonthly during the summer and fall |
1968 |
|
|
Contact |
|
Yolo Bypass Fish Monitoring Program: Continuous Water Quality |
DWR |
Brian Schreier |
Several stations in Yolo Bypass and one comparison location in Sacramento River |
1999 and various (site dependent) |
|
Contact |
|
Table 3. Phytoplankton, Zooplankton, and Benthic Invertebrate Surveys
|
Program |
Agency |
Contact Information |
Descriptor |
Start Year |
Sample Site Map (and shapefile if available) |
Metadata |
Download Data |
|---|---|---|---|---|---|---|---|
|
Environmental Monitoring Program: Phytoplankton |
DWR |
Tiffany Brown |
Monthly chlorophyll and phytoplankton samples collected throughout the estuary |
1975 |
|||
|
Yolo Bypass Fish Monitoring Program: Lower Trophic |
DWR |
Brian Schreier |
Biweekly samples in Yolo Bypass, and one comparison location in the Sacramento River |
Chlorophyll: 2001 and various (site dependent); Phytoplankton: 2015 Zooplankton: 1998; Drift Invertebrates: 1998 |
Contact |
||
|
Environmental Monitoring Program: Benthics |
DWR |
Betsy Wells |
Benthic samples collected monthly at ten sites located throughout the estuary |
1975 |
Map 1 - Benthic Historic Monitoring Stations
|
||
|
Environmental Monitoring Program: Zooplankton |
CDFW |
April Hennessy |
Monthly microzooplankton (63-150 microns), mesozooplankton (150-500 microns), and mysid (>500 microns) samples collected throughout the estuary |
1975 |
|||
|
CDFW |
Randy Baxter, |
A subset of stations are sampled for zooplankton: Clarke-Bumpus (CB)and mysid nets |
2005 Sep only, 2011 Sep-Dec |
||||
|
CDFW |
Randy Baxter, (209) 234-3483 |
Zooplankton sampled during first tow (CB sample). |
2005 |
||||
|
CDFW |
Bob Fujimura |
Zooplankton; CB samples, March-July |
1995 |
||||
|
CDFW |
Kathy Hieb |
Decapods: shrimp, and crabs using otter trawls and midwater trawls throughout the Bay and upper estuary. |
1980 |
|
Metadata included in zipped folders with Access databases |
Table 4. Fish Surveys
|
Program |
Agency |
Contact Information |
Descriptor |
Start Year |
Site Map |
Metadata Link |
Download Data |
|---|---|---|---|---|---|---|---|
|
CDFW |
Randy Baxter, |
Fish survey using midwater trawls to target juvenile and adult fish throughout the upper estuary during the fall. |
1967 |
||||
|
CDFW |
Randy Baxter, (209) 234-3483 |
Fish survey targeting juvenile Delta Smelt and age-0 striped bass during June through August. |
1959 |
||||
|
CDFW |
Kathy Hieb |
Survey of pelagic and demersal fish, shrimp, and crabs using otter trawls and midwater trawls throughout the Bay and upper estuary. |
1980 |
|
Metadata included in zipped folders with Access databases |
||
|
CDFW |
Bob Fujimura |
Larval and small juvenile fish survey to determine timing, distribution and abundance of Delta Smelt larvae and their food supply (zooplankton; CB samples), March-July |
1995 |
||||
|
United States Fish and Wildlife Service (USFWS) |
Brian Mahardja |
Beach seine and trawling surveys from San Pablo Bay to Colusa on Sacramento River and lower San Joaquin River |
Beach seine, Chipps Island trawl: 1976; Sherwood Harbor (Sac River) trawls: 1988; Mossdale (San Joaquin River) trawl: 1994 |
Map and coordinates provided in metadata |
|||
|
Knights Landing Juvenile Salmon |
CDFW |
Colin Purdy |
Rotary screw traps in the Sacramento River fished from Oct-June targeting juvenile Chinook salmon. |
1995 |
|
Contact |
|
|
CDFW |
Bob Fujimura |
Fish survey targeting adult, spawning delta smelt, Jan-May |
2002 |
||||
|
University of California, Davis (UCD) |
|
Fish and invertebrate sampling in Suisun Marsh to document long-term population trends of native and introduced fishes. |
1979 |
|
|
Contact |
|
|
CDFW |
Bob Fujimura |
Near real-time distribution data for targeting larval smelt in the upper estuary, Jan-March |
2009 |
|
|||
|
CDFW |
Monitors adult striped bass through creel surveys, mark-recapture studies, and commercial passenger fishing vessel log-book information. |
1969 |
|
||||
|
CDFW |
Monitors adult green and white sturgeon through creel surveys, mark-recapture studies, and commercial passenger fishing vessel log-book information. |
1967 |
|
||||
|
Yolo Bypass Fish Monitoring Program |
DWR |
Brian Schreier |
Biweekly beach seines, juvenile fish rotary screw trap (Jan – June); adult fish fyke net (October – June); biweekly larval fish tows in the Yolo Bypass. |
Beach seines, rotary screw trap: 1998; Fyke trap, larval tows: 1999 |
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|
Liberty Island Fish Survey |
USFWS |
Denise Barnard |
Larval fish sampling and monthly beach seine surveys inside Liberty Island. |
|
|
|
Contact |