CALIFORNIA WATER NEWS

COURTHOUSE NEWS: Tire manufacturers fight accusations that toxic runoff harms fish

Maven January 29, 2026

Delta Conveyance Project

DELTA CONVEYANCE PROJECT: Looking back at progress made and ahead to what’s next

Maven January 29, 2026

Water project operations

DWR: How the State Water Project used adaptive management to capture more water during recent storms

Maven January 29, 2026

Commentary Delta Conveyance Project

C-WIN: Big tunnel, big taxes: Newsom’s gigantic water project would spike property taxes

CA Water Impact Network (C-WIN) January 29, 2026

COURTHOUSE NEWS: Tire manufacturers cast doubt on lab studies as trial over toxic roadway runoff continues

Courthouse News Service January 28, 2026

Policy and regulation

RESTORE THE DELTA: Environmental advocates and tribes call for equitable alternatives to voluntary agreements ahead of Bay-Delta Plan hearing

Restore the Delta January 28, 2026

Policy and regulation

PRESS RELEASE: Westlands Water District lauds the Lower Yuba River Accord as model for collaborative water management

Westlands Water District January 28, 2026

AG ALERT: Invasive mussels spread, could clog irrigation systems

Ag Alert January 28, 2026

Notebook News and Features Policy and regulation

NOTEBOOK FEATURE: A hard look at the 3,000-page Bay-Delta Plan

Alastair Bland January 27, 2026

COURTHOUSE NEWS: Trial begins in tire chemical runoff case against tire manufacturers

Courthouse News Service January 27, 2026

UNIV. OF COLORADO: Considerations for assigned water after expiration of the 2007 guidelines

University of Colorado at Boulder January 27, 2026

USGS: Recent scientific contributions by the U.S. Geological Survey in the San Francisco Bay and Sacramento–San Joaquin Delta Estuary

USGS January 27, 2026

Fish and wildlife

PRESS RELEASE: Nearly two million juvenile salmon released into winter-flooded rice fields in hopes of stronger survival rates to the Pacific Ocean

Guest Contributor January 27, 2026

CAL MATTERS: Residents of a polluted California town pinned hopes on new state rules. They’re still waiting

Cal Matters January 27, 2026

SJV WATER: Water continued to be a dominant factor in Kern County ag land values in 2025

SJV Water January 27, 2026

Latest news from around the web

DAILY DIGEST, 1/29: Heated debate over Delta water plan as environmentalists warn of ‘ecosystem collapse’; Tire manufacturers fight accusations that toxic runoff harms fish; Western states face ‘snow drought’ as snowpack hits record lows; California faces tough choices as federal water rules near expiration; and more …

January 29, 2026

Several news sources featured in the Daily Digest may limit the number of articles you can access without a subscription....

DAILY DIGEST, 1/28: New rules change how La Niña and El Niño are classified; Trump and Newsom’s tug-o-water; Golden mussels spread through Delta, irrigation systems; All alternatives harmful to Arizona: CAP’s response to the Draft EIR; and more …

January 28, 2026

DAILY DIGEST, 1/27: A hard look at the 3,000-page Bay-Delta Plan; Trial begins in tire chemical runoff case against tire manufacturers; Artificial intelligence and California’s water; California to host high-stakes discussion on Colorado River crisis as federal deadline looms; and more …

January 27, 2026

DAILY DIGEST, 1/26: Not dry, but drought remains an issue, mid-wet season 2026; The Delta’s role in California’s carbon sequestration and climate goals; Conservation may not be enough to sustain water supplies, researchers find; As deal deadline approaches, Colorado River stewards debate a broad range of options; and more …

January 26, 2026

ONLY ON MAVEN'S NOTEBOOK

NOTEBOOK FEATURE: A hard look at the 3,000-page Bay-Delta Plan

January 27, 2026

NOTEBOOK FEATURE: The Delta’s role in California’s carbon sequestration and climate goals

January 26, 2026

NOTEBOOK FEATURE: Climate change, the Delta, and its watersheds: What we know, what we don’t, & what surprises might be out there

January 21, 2026

California water news

COURTHOUSE NEWS: Tire manufacturers fight accusations that toxic runoff harms fish

January 29, 2026

Conservationists claim that runoff of a chemical in car tires is harming endangered fish and violating the Endangered Species Act....

DELTA CONVEYANCE PROJECT: Looking back at progress made and ahead to what’s next

Delta Conveyance Project

January 29, 2026

From the Department of Water Resources: The Delta Conveyance Project is one of California’s most important infrastructure modernization projects, protecting...

DWR: How the State Water Project used adaptive management to capture more water during recent storms

Water project operations

January 29, 2026

From the Department of Water Resources: As runoff from the last sizable storm was rolling down California rivers to San...

C-WIN: Big tunnel, big taxes: Newsom’s gigantic water project would spike property taxes

CA Water Impact Network (C-WIN)

Commentary Delta Conveyance Project

January 29, 2026

By Tom Stokely and Max Gomberg Senior Policy Advisors, California Water Impact Network Rising costs are squeezing Californians. Groceries, rent,...

COURTHOUSE NEWS: Tire manufacturers cast doubt on lab studies as trial over toxic roadway runoff continues

Courthouse News Service

January 28, 2026

The three-day trial will determine whether tire manufacturers are violating the Endangered Species Act by using a chemical additive in...

RESTORE THE DELTA: Environmental advocates and tribes call for equitable alternatives to voluntary agreements ahead of Bay-Delta Plan hearing

Restore the Delta

Policy and regulation

January 28, 2026

Press release Environmental advocates and Tribal leaders today spoke out against the inequitable and misleading Voluntary Agreements within the latest...

PRESS RELEASE: Westlands Water District lauds the Lower Yuba River Accord as model for collaborative water management

Westlands Water District

Policy and regulation

January 28, 2026

Press release from the Westlands Water District Westlands Water District (Westlands) welcomes the State Water Resources Control Board’s unanimous approval...

AG ALERT: Invasive mussels spread, could clog irrigation systems

January 28, 2026

By Vicky Boyd, Ag Alert Since the non-native golden mussel was first discovered in October 2024 in the Sacramento-San Joaquin...

NOTEBOOK FEATURE: A hard look at the 3,000-page Bay-Delta Plan

Notebook News and Features Policy and regulation

January 27, 2026

Is a state plan to update Delta water rules double counting restoration of water and habitat? By Alastair Bland A...

COURTHOUSE NEWS: Trial begins in tire chemical runoff case against tire manufacturers

Courthouse News Service

January 27, 2026

Conservationists say that a chemical used by car tire manufacturers in the U.S. is leaching into waterways and killing protected...

UNIV. OF COLORADO: Considerations for assigned water after expiration of the 2007 guidelines

University of Colorado at Boulder

January 27, 2026

From the University of Colorado at Boulder: Assigned Water programs in the Colorado River system, like Intentionally Created Surplus and...

USGS: Recent scientific contributions by the U.S. Geological Survey in the San Francisco Bay and Sacramento–San Joaquin Delta Estuary

January 27, 2026

From the USGS: The San Francisco Bay and Sacramento–San Joaquin Delta Estuary (hereafter, Bay-Delta) is the largest estuary on the...

Delta

RESTORE THE DELTA: New report reveals AI data center boom threatens Delta communities and ecosystems

Restore the Delta

Planning and management

January 16, 2026

Press release from Restore the Delta As artificial intelligence (AI) infrastructure rapidly expands, a new white paper released today by Restore the...

USGS: A model to predict sediment bulk density for the San Francisco Estuary

Planning and management

January 13, 2026

DELTA LEAD SCIENTIST: The role of wetland restoration in reviving Delta food webs

January 5, 2026

NOTEBOOK FEATURE: The biggest threat to the Delta you’ve (probably) never heard of

Notebook News and Features Water quality

December 9, 2025

Groundwater News

EOS: Report: 13 Great Lakes’ worth of water underlies the contiguous United States

American Geophysical Union

Groundwater News

January 26, 2026

Combining direct measurements with artificial intelligence methods, a new map estimates groundwater depth across the contiguous United States at a...

SJV WATER: Pumping allocation described as “necessary evil” approved by Kings County groundwater agency

Groundwater News

January 23, 2026

SGMA IMPLEMENTATION: DWR finalizes Best Management Practices to help address subsidence and protect California’s water infrastructure

Groundwater News

January 22, 2026

CSULB: Researchers trace climate threat rising beneath California

Groundwater News

January 22, 2026

Ecosystems

AG ALERT: Invasive mussels spread, could clog irrigation systems

January 28, 2026

By Vicky Boyd, Ag Alert Since the non-native golden mussel was first discovered in October 2024 in the Sacramento-San Joaquin...

USGS: Biophysical controls on sediment erodibility in San Francisco Bay

January 26, 2026

DWR: How collaborative efforts are reviving a vital ecosystem in the Delta

January 15, 2026

UC IRVINE: Scientists discover how fast the world’s deltas are sinking

January 15, 2026

Colorado River

UNIV. OF COLORADO: Considerations for assigned water after expiration of the 2007 guidelines

University of Colorado at Boulder

January 27, 2026

From the University of Colorado at Boulder: Assigned Water programs in the Colorado River system, like Intentionally Created Surplus and...

NEVADA CURRENT: Governors of Colorado River states summoned to DC in hopes of breaking negotiations impasse

January 23, 2026

PRESS RELEASE: Imperial Irrigation District advances voluntary conservation efforts to support Lake Mead and the Colorado River System

January 23, 2026

UTAH NEWS DISPATCH: Colorado River talks: States are still at odds but working toward a 5-year plan

January 21, 2026

Announcements

NOW AVAILABLE: Answers to Tulare Lake Subbasin Frequently Asked Questions Now Available

State Water Board

January 9, 2026

Information for Tulare Lake groundwater extractors regarding metering, groundwater extraction reporting, fees, and subbasin status is now available in Frequently Asked Question...

FUNDING OPPORTUNITY: 2025-26 San Francisco Bay Program Notice of Funding Opportunity (NOFO) is now OPEN

US Environmental Protection Agency

January 9, 2026

From the US EPA Region 9: The SF Bay Program is funding from Congress to protect and restore San Francisco...

OPPORTUNITY TO COMMENT: 2025-2030 Nonpoint Source Program Implementation Plan

State Water Board

January 5, 2026

From the State Water Resources Control Board: A Notice of Opportunity for Public Comment on the Draft 2025-2030 Nonpoint Source...

ANNOUNCEMENT: DRIP Collaborative seeks to fill membership vacancies

Department of Water Resources (DWR)

December 3, 2025

From the Department of Water Resources: On behalf of the Drought Resilience Interagency and Partners (DRIP) Collaborative, the Department of...

PUBLIC HEARING Regarding the Appeals Filed for the Delta Conveyance Project Certification of Consistency with the Delta Plan

Delta Stewardship Council

ANNOUNCEMENTS Delta Conveyance Project

November 28, 2025

From the Delta Stewardship Council: The Delta Stewardship Council will conduct a public hearing on February 26 and 27, 2026,...

YOUR INPUT WANTED: Recharge Incentives Survey Re-Opened Until December 5th

Guest Contributor

November 25, 2025

From Sustainable Conservation: Recently we asked you to spend a little time responding to our survey on groundwater recharge incentives....

YOUR INPUT WANTED: Winter-run Chinook Salmon Annual Loss Independent Peer Review

Delta Stewardship Council

Science Announcement

November 25, 2025

From the Delta Science Program: At the request of the U.S. Bureau of Reclamation and California Department of Water Resources,...

YOUR INPUT WANTED: Draft 2026 Delta Science Plan

Delta Stewardship Council

Science Announcement

November 20, 2025

From the Delta Science Program: The Delta Stewardship Council’s Delta Science Program is developing the third iteration of the Delta...

CA WATER COMMISSION: Water Storage Investment Program Notice of Proposed Emergency Regulation

CA Water Commission

November 8, 2025

From the California Water Commission: At its meeting on November 19, 2025, the California Water Commission (Commission) will consider modifying...

NOTICE: Draft 2025 UWMP Guidebook Release Public Meeting and Public Comment Period

Department of Water Resources (DWR)

November 5, 2025

From the Department of Water Resources: Please use the link below to register for the upcoming meeting on the Public Review...

Reports

Delta science Reports

NOW AVAILABLE: Now Available: FY 2023-2024 Delta Crosscut Budget Report

Delta Stewardship Council December 12, 2025

Reports Water project operations

REPORT: NASEM reviews science behind Central Valley Project and State Water Project operations

Maven December 11, 2025

Reports Water project operations

REPORT: New DWR conveyance study finds groundwater stabilization key to protecting San Joaquin Valley water supplies

Department of Water Resources (DWR) November 25, 2025

Reports Water project operations

UC DAVIS: How California’s state and federal water projects can better protect fish

UC Davis November 15, 2025

Reports Water project operations

NEW REPORT: Review of the Long-Term Operations of the Central Valley Project and the State Water Project

Guest Contributor November 10, 2025

Groundwater News Reports

DWR: New reports show progress in community actions to make groundwater sustainability a reality in California

Department of Water Resources (DWR) October 21, 2025

Climate change Reports

REPORT: From drought to deluge: WMO report highlights increasingly erratic water cycle

Utah Dispatch October 3, 2025

Planning and management Reports

UCLA: Student research drives water resilience and equitable solutions in post-fire Los Angeles

UCLA August 28, 2025

Groundwater News Reports

PRESS RELEASE: DWR Semi-Annual Groundwater Conditions Update highlights key trends for Water Year 2024

Department of Water Resources (DWR) June 24, 2025

Planning and management Reports

NEW REPORT: ASM and AGU offer critical strategies to protect public health and safe drinking water amid climate change

American Geophysical Union June 12, 2025

Podcasts and webinars

Author Podcasts WATER SHELF

WATER SHELF PODCAST: “Body in a Barrel” by Aaron Mead

Justin Scott-Coe January 11, 2026

Fish and wildlife Science Podcasts

DELTA DISPATCH: How To Have Our Fish, and Eat Them, Too

Estuary News Group November 22, 2025

Author Podcasts WATER SHELF

WATER SHELF PODCAST: “Living with Water Scarcity” by David Zetland

Justin Scott-Coe August 31, 2025

Author Podcasts WATER SHELF

WATER SHELF PODCAST: “Replumbing the City” by Sayd Randle

Justin Scott-Coe July 11, 2025

Podcasts and webinars Science Podcasts

PODCAST: Destination: Delta

Estuary News Group June 2, 2025

Ecosystems Science Podcasts

DELTA DISPATCH: Restoration, reciprocity

Estuary News Group April 26, 2025

Science Podcasts

DELTA DISPATCH: From Snowpack To Spigot

Estuary News Group April 26, 2025

Author Podcasts WATER SHELF

WATER SHELF PODCAST: “Too Good to Be True” by Paul Brown

Justin Scott-Coe April 18, 2025

Fish and wildlife Science Podcasts

SCIENCE IN SHORT: Longfin smelt, the little fish that gets around

Ashleigh Papp March 5, 2025

Author Podcasts WATER SHELF

WATER SHELF PODCAST: “Water: A Biography” by Giulio Boccaletti

Justin Scott-Coe February 17, 2025