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Ca Water Commission

@CA_WaterCom

Official twitter handle of the California Water Commission. Follow us for news, information and updates. https://nitter.gq/t.co/S9Ockf83aZ

 Sacramento, CA
cwc.ca.gov
Joined March 2016
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This year’s El Niño is trending as one of the strongest on record, so DWR is investing in flood preparedness to help protect our communities. As you read this, construction is currently underway on the Tisdale Weir Rehabilitation and Fish Passage Project to structurally improve the weir so that it can better provide critical flood protection while protecting fish species. Check out more photos at pixel-ca-dwr.photoshelter.co…
Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish stranding and structurally improve the weir to extend its design life. Photo taken October 2, 2026.

ALT Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish stranding and structurally improve the weir to extend its design life. Photo taken October 2, 2026.

Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken October 2, 2026.

ALT Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken October 2, 2026.

A drone view of construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken October 28, 2026.

ALT A drone view of construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken October 28, 2026.

Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken July 22, 2026.

ALT Construction underway on the Tisdale Weir Rehabilitation and Fish Passage Project in Sutter County. One of the five major overflow weirs on the Sacramento River that DWR operates, the Tisdale Weir provides critical flood protection and was built in 1932 atop an earlier structure. In its current design, the weir can strand fish species behind the structure once flood flows recede. The improvement project, led by California Department of Water Resource’s (DWR) Flood Maintenance and Operations Branch, will include a fish passage to prevent fish strandings and structurally improve the weir to extend its design life. Photo taken July 22, 2026.

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The Dept. of Water Resources will host the third California Water Plan 2028 Advisory Committee meeting on Wednesday and Thursday in Visalia. The Advisory Committee is an appointed body; all committee meetings are open to the public; both meetings will be livestreamed on YouTube.
Image from Ca Water Commission (@CA_WaterCom)
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California Water CommissionChair Fern Steiner is an ex-officio member of the Advisory Committee. She brings a lifetime of knowledge and experience to the committee, having served as director of both the Metropolitan Water District and the San Diego County Water Authority.
Image from Ca Water Commission (@CA_WaterCom)
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What does ex-officio mean? It’s Latin for “by right of office” and means that a person automatically gains a position on a board, committee, or council simply because they hold another specific job or title.
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Attention boaters and recreationists: Lake Perris will close Tuesday, Nov. 3 and possibly Wednesday, Nov. 4 to allow for a copper sulfate application to rid the lake of an algal bloom. The closure includes pedestrian traffic on the dam. The lake will re-open once post treatment inspections are completed.
A view of Lake Perris and Dam on January 8, 2026. The artificial lake is the southern terminus of the California State Water Project, located in Riverside County, California.

ALT A view of Lake Perris and Dam on January 8, 2026. The artificial lake is the southern terminus of the California State Water Project, located in Riverside County, California.

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An important step in ensuring our infrastructure is prepared to handle weather extremes is consistently inspecting it for any critical issues. In an intense El Niño year, a DWR levee inspector becomes even more essential as they perform scheduled levee inspections across the state. Check out more photos at pixel-ca-dwr.photoshelter.co…
Corey Fujitani a Levee Inspector with The California Department of Water Resources (DWR) performs a scheduled levee inspection on a section of levee along the Sacramento River in Yolo County, California.

ALT Corey Fujitani a Levee Inspector with The California Department of Water Resources (DWR) performs a scheduled levee inspection on a section of levee along the Sacramento River in Yolo County, California.

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Lake Perris will be closed to boating and recreation Oct. 30 as treatment is applied to treat an algal bloom. Foot traffic on the dam is restricted as well. The facility will re-open once staff complete post treatment inspections on Oct. 31. Learn more at water.ca.gov/What-We-Do/Recr…
Construction of the Emergency Release Facility at Lake Perris in Riverside County, California. Photo taken on January 8, 2026.

ALT Construction of the Emergency Release Facility at Lake Perris in Riverside County, California. Photo taken on January 8, 2026.

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Ca Water Commission retweeted
Delta Conservancy (@DeltaConservncy) profile picture
Delta Conservancy@DeltaConservncyOct 29
📢 Join us for the Inland Wetlands Nature-Based Solutions Summit on 11/12! We will explore key opportunities to scale nature-based solutions, increase connectivity among partners, & recognize implementation leadership & successes across CA. 🔗 Register: tnc.swoogo.com/NBSSummits202…
Flyer for the Inland Wetlands Nature-Based Solutions Summit on November 12 at UC Davis. Co-hosts: California Natural Resources Agency, Sacramento-San Joaquin Delta Conservancy, California Department of Fish and Wildlife, Ducks Unlimited, Inc., Central Valley Joint Venture, and The Nature Conservancy

ALT Flyer for the Inland Wetlands Nature-Based Solutions Summit on November 12 at UC Davis. Co-hosts: California Natural Resources Agency, Sacramento-San Joaquin Delta Conservancy, California Department of Fish and Wildlife, Ducks Unlimited, Inc., Central Valley Joint Venture, and The Nature Conservancy

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Preventing flooding has always been part of our preparedness plan but with El Niño expected just around the corner, we’re ensuring every measure is taken. Recently, DWR utility craftworkers from the Sacramento Maintenance Yard Division of Flood Management trained to install sections of a Flash Board Structure which will help to prevent flooding in the area during storms. Check out more photos at pixel-ca-dwr.photoshelter.co…
Department of Water Resources (DWR) utility craftworkers from the Sacramento Maintenance Yard Division of Flood Management train to install sections of a Flash Board Structure along the Sacramento River near Hood in Sacramento County, California. The Flash Board Structure helps prevent flooding in the area during storms.

ALT Department of Water Resources (DWR) utility craftworkers from the Sacramento Maintenance Yard Division of Flood Management train to install sections of a Flash Board Structure along the Sacramento River near Hood in Sacramento County, California. The Flash Board Structure helps prevent flooding in the area during storms.

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Ca Water Commission retweeted
Sierra Nevada Conservancy (@CAsWatershed) profile picture
Sierra Nevada Conservancy@CAsWatershedOct 29
CA’s mountain meadows are a small part of the landscape, but these high-elevation #wetlands quietly store remarkable amounts of carbon. They also filter, store, & slowly release water into the state’s water supply systems, making clean water available in the hot, dry months!
Image from Sierra Nevada Conservancy (@CAsWatershed)
Image from Sierra Nevada Conservancy (@CAsWatershed)
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Climate change doesn’t just pose a risk to us now but to future generations to come. The Watershed Resilience Pilot studies gave water agencies a foundation for long-term adaptation to the future risks their region will face. Like the Stockton East Water District, who developed one of the most comprehensive climate analysis of the Calaveras River Watershed to date with 48 future climate scenarios that identify how rising temperatures, more intense storms, and increased wildfire probability impact both upper and lower watershed communities. Learn more about the successes of this pilot project and others at water.ca.gov/-/media/DWR-Web…
Climate Change Challenges: Calaveras River Watershed • Reduced surface water deliveries • Increase in water demand • Reduced aquifer groundwater storage

ALT Climate Change Challenges: Calaveras River Watershed • Reduced surface water deliveries • Increase in water demand • Reduced aquifer groundwater storage

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We hear “El Niño” more and more frequently as we head into wet weather across California, but what does El Niño mean? This natural phenomenon happens when the ocean near the equator gets warmer than normal which can lead to stronger, more frequent, and destructive storms. And this year’s El Niño is trending as one of the strongest on record! Prepare you and your family for whatever El Niño may bring by visiting water.ca.gov/befloodready
What is El Niño? El Niño is a natural phenomenon that increases the chance of storm activity in California and leads to other potentially harmful impacts.

ALT What is El Niño? El Niño is a natural phenomenon that increases the chance of storm activity in California and leads to other potentially harmful impacts.

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As climate extremes become the new normal, DWR has released a new report that shows how it's using science, investments, and partnerships to strengthen preparedness and protect Californians. "Collaborating for Climate Resilience: The Power of Science and Partnerships" is DWR’s Report for California’s Fifth Climate Change Assessment. Read the article to learn how DWR is advancing science-driven decision-making through four focus areas to integrate and transform California water management and how we are also working with partners like @cal_lci to help guide meaningful climate adaptation and support on-the-ground action: water.ca.gov/News/Blog/2026/…
Image from California Department of Water Resources (@CA_DWR)
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You’ve heard about the tour from your friends, and you can’t wait to try it… Today is the final ticket release for Feather River Floating Classroom tour on Saturday Nov. 7. Don’t miss your last opportunity to reserve a spot for this FREE educational raft tour during the peak of the Chinook salmon spawning season. Float through the Feather River habitat while our scientists share insights on salmon conservation efforts. Tickets are available on a first-come, first-served basis. Reserve your tickets at eventbrite.com/o/89742378843
Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

ALT Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

ALT Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

ALT Feather River Floating Classroom tour in Oroville during an environmental sciences workshop, learning about the Fall salmon run. Photo taken November 12, 2024.

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Ca Water Commission retweeted
Sierra Nevada Conservancy (@CAsWatershed) profile picture
Sierra Nevada Conservancy@CAsWatershedOct 23
What does it take to restore a landscape after a #wildfire? In Concow, partners are working to restore the landscape by supporting the return of oak-dominated forest. The goal is a healthier, resilient landscape that can support both people & wildlife.
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It’s Flood Preparedness Week. Know your risk and be flood prepared for California’s unpredictable extreme weather conditions, like El Niño storms. Have an evacuation plan, an emergency kit, and make sure you have flood insurance. Neighborhoods, roads, schools and critical infrastructure can all be affected by flooding. Are you prepared? You can find tips and resources on how to plan for California’s extreme weather at bit.ly/floodprepca
Be Flood Ready Flash flooding, mud, and debris flows happen quickly. Be aware - Be Prepared - Take action

ALT Be Flood Ready Flash flooding, mud, and debris flows happen quickly. Be aware - Be Prepared - Take action

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Ca Water Commission retweeted
Sierra Nevada Conservancy (@CAsWatershed) profile picture
Sierra Nevada Conservancy@CAsWatershedOct 22
Keep an eye out for one of the Sierra Nevada’s most adaptable predators: Coyotes are a familiar part of Yosemite’s wildlife, helping regulate small mammal populations and playing an important role in the food web!
Image from Sierra Nevada Conservancy (@CAsWatershed)
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Throwback Thursday: In 1973, the California Water Commission held their monthly meeting at – wait, what? – the Disneyland Hotel?!?
Image from Ca Water Commission (@CA_WaterCom)
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Granted, there are plenty of rivers, moats, and water features in Disneyland to satisfy any hydro-enthusiast, but we’d have to think the Commission’s jurisdiction ended once they went through the Magic Kingdom’s gate.
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How is DWR preparing for El Niño? Watch the video to learn how DWR is investing time, materials, and resources to help keep California communities safe from destructive flooding. And find out how you can prepare at water.ca.gov/What-We-Do/Floo…
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