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San Luis Reservoir Algal Bloom Increases to Danger Advisory

Today, DWR urges people to avoid physical contact with water at San Luis Reservoir in Merced County until further notice due to the presence of blue-green algae ...

San Luis Reservoir Algal Bloom Increases to Warning Advisory

DWR is urging people to avoid physical contact with the water at San Luis Reservoir in Merced County until further notice due to blue-green algae.

San Luis Reservoir Algal Bloom Increases to Warning Level

The Department of Water Resources (DWR) is urging the public to avoid contact with water at San Luis Reservoir in Merced County until further notice due to blue ...

San Luis Reservoir Algal Bloom Reduces to “Warning” Level: Public Urged to Avoid Water Contact

DWR urged people to avoid physical contact with the water at San Luis Reservoir in Merced County until further notice due to blue-green algae.

San Luis Reservoir and O'Neill Forebay Open with Algal Advisories: Public Urged to Avoid Water Contact

State Water Project facilities at San Luis Reservoir are open after closures due to nearby fires. However, a harmful algal bloom warning advisory has been issue ...

San Luis Reservoir Recreation

San Luis Reservoir, located in the western San Joaquin Valley near historic Pacheco Pass, serves both the SWP and federal Central Valley Project. San Luis Reser ...

San Luis Reservoir's Algal Bloom Advisory Removed

DWR removed a caution advisory that had been in effect since October 25 at San Luis Reservoir in Merced County. DWR urges all recreational users to exercise cau ...

Science

We utilize a wide range of applied science specialties to develop solutions to the complexities of sustainable water management in California, including chemist ...

Searsville Watershed Restoration Project

DWR is the California Environmental Quality Act (CEQA) lead agency for the Searsville Watershed Restoration Project which will be implemented by Stanford Univer ...

Seasonal Application Efficiency

DWR and the University of California, Davis have developed the California Seasonal Application Efficiency Program to assess how efficiently irrigation water is ...

Seasonal Maps Provide Snapshot of State Groundwater Levels

Groundwater is an important resource for Californians because rain and snowfall levels can vary dramatically from year to year. Groundwater provides 40 percent ...

Second Snow Survey of the Year Shows Modest Improvement for Snowpack, Conditions Remain Below Average

DWR conducted the second snow survey of the season at Phillips Station.

Second Snow Survey Reflects Boost from Atmospheric Rivers

The Department of Water Resources (DWR) today conducted the second snow survey of the season at Phillips Station.

Secretary Crowfoot: Reactivating Natural Floodplains in Central Valley is a Win-Win

At his inaugural Speaker Series on July 15, California Secretary for Natural Resources Wade Crowfoot led a discussion on restoring local wildlife species and ha ...

Security and Emergency Management Program

The Security and Emergency Management Program (SEMP) provides guidance to all Divisions and groups within DWR as well as with outside stakeholders to prepare fo ...

Seismic Work Underway on Castaic Dam’s Tower Access Bridge

DWR began construction on Castaic Dam’s tower access bridge in Los Angeles County to reduce seismic risks during a major earthquake.

Senate Bill 72 Bolsters California Water Plan and Advances Long-Term Water Supply Goals

In 2022, Governor Gavin Newsom released California’s Water Supply Strategy, outlining necessary actions for the state to adapt to a hotter, drier future where t ...

September Delta Conveyance Update

Throughout September, DWR continued to prepare for the environmental review of a single tunnel solution to modernize State Water Project infrastructure.

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