DWR Releases Final EIR for Delta Conveyance Project

  • by Department of Water Resources
  • Dec 8, 2023
  • Water News

The Department of Water Resources today released the Final Environmental Impact Report (EIR) for the proposed Delta Conveyance Project, advancing an essential piece of the state’s strategy to protect water access for millions of Californians. It was redesigned following public input and Governor Newsom’s pledge of rightsizing the project to one tunnel to better support both environmental and water supply needs.

By 2040, California is expected to lose 10% of its water supply due to hotter temperatures. During January’s atmospheric rivers, the Delta Conveyance Project could’ve captured enough water for 2.3 million peoples’ yearly usage. Until this year, the state faced its three driest years on record. Extreme weather whiplash will result in more intense swings between droughts and floods. California’s 60-year-old State Water Project infrastructure is not built for these climate effects.

The Delta Conveyance Project would modernize the state’s water infrastructure to:

  • Capture and move more water during wet seasons to better endure dry seasons;
  • Minimize future losses from climate-driven weather extremes;
  • Protect against earthquakes disrupting water supplies;
  • Continue meeting regulatory water quality and fishery requirements, and add new operating rules for further fishery protections;
  • Includes a Community Benefits Program to ensure local communities get the means and resources to achieve tangible and lasting benefits.

“Climate change is threatening our access to clean drinking water, diminishing future supplies for millions of Californians – doing nothing is not an option. After the three driest years on record, we didn’t have the infrastructure to fully take advantage of an exceptionally wet year, which will become more and more critical as our weather whiplashes between extremes,” said Governor Gavin Newsom. “This project is essential to updating our water system for millions of Californians. This new approach, redesigned following community and environmental input, is how we can build a California of the future.”

This project is key to California’s Water Resilience Portfolio and Governor Newsom’s Water Supply Strategy.

Throughout development of the proposed project, DWR heard from local communities and used feedback to address concerns, with some of these recommendations including: avoiding the central Delta, avoiding forebays and barge landings, reducing pile driving, undergrounding power near sandhill crane habitat, minimizing acreage needed to store tunnel material, and minimizing the project footprint.

The proposed project also includes a Community Benefits Program, with the goal to identify and implement local projects that can provide tangible and lasting local benefits.

“Modernized infrastructure in the Delta is a missing link to the state’s most affordable and reliable source of water,” said Karla Nemeth, Director of the California Department of Water Resources. “Improving water use efficiency and increasing local water supplies is an important compliment to the State Water Project to ensure that a climate proof water supply remains affordable now and into the future.”

The environmental review included a 142-day public comment period in which DWR received more than 700 letters and 7,000 individual comments. Outreach began in 2020 and has included a multitude of webinars, workshops, briefings, multi-language informational materials, email updates, videos, animations, tabling at local events, and a comprehensive Delta survey. The Final EIR responds to all substantive comments.

“We worked hard to address local concerns and made considerable improvements to minimize terrestrial species effects, wetland impacts,noise, air quality impacts, traffic, power needs, boating and waterway effects, land disturbance, and overall project footprint,” said Carrie Buckman, the project’s Environmental Program Manager.

An Environmental Impact Report evaluates and discloses to public agency decision makers and the public the potential environmental impacts, and identifies feasible mitigation measures to avoid, minimize, or otherwise offset potentially significant impacts.

Proposed responses to comments, as well as the Final EIR and accompanying informational resources, can be accessed at www.deltaconveyanceproject.com. This action signifies the last step DWR is required to take under the California Environmental Quality Act (CEQA) prior to deciding whether to certify the EIR and approve the proposed project.

The Final EIR was prepared by DWR as the lead agency to comply with the requirements of CEQA. The Final EIR is presented in two volumes: 1) the contents of the entire Draft EIR, as revised, and 2) all comments received on the Draft EIR and responses to substantive comments.

At the conclusion of the CEQA process, DWR will determine if the Final EIR has been completed in compliance with CEQA and whether to certify that the Final EIR reflects DWR’s independent judgment and analysis. Following certification of the Final EIR, DWR will then use the information in it to assist in determining whether to approve the proposed project, an alternative or no project. Learn more about the CEQA process here. Find a full list of informational materials here. A video and infographic materials are available in a DWR news release.

 

Suggested Resources

15 RESOURCES prev next
Water Systems and Wildfire Preparedness Legislation Talking Points

Sorry, but only ACWA members have permission to view this content. Member login is required.

ACWA-Sponsored SB 1153 (Caballero) Fact Sheet

ACWA-sponsored SB 1153, authored by Senator Anna Caballero (D-Merced) would clarify the limited role of public water systems during wildfires while […]

Comment Letter: 2026-27 State Budget – Climate Bond, Greenhouse Gas Reduction Fund, Position Elimination

To: Senate President pro Tempore Limón, Assembly Speaker Rivas, Budget Chairs Laird and Gabriel, and Subcommittee Chairs Gómez Reyes and Bennett […]

Joint Comment Letter: Fully Funding The SAFER Drinking Water Program

To: Governor Gavin Newsom, Senate President pro Tempore Limón, Assembly Speaker Rivas, Budget Chairs Laird and Gabriel Subject: Fully Funding […]

ACWA-Sponsored AB 2180 (Ward) Fact Sheet

ACWA-sponsored AB 2180 (Ward) would clarify how water agencies comply with Proposition 218 when setting water rates. This clarification will […]

2025 Year in Review

ACWA’s “2025 Year in Review” highlights ACWA’s advocacy efforts, key accomplishments, member services, awards, events and other milestones from the […]

Priority Issues Bulletin

Sorry, but only ACWA members have permission to view this content. Member login is required.

Comment Letter: U.S. EPA: National Primary Drinking Water Regulation for Perchlorate

To: Anne Lausier, U.S. Environmental Protection Agency, Office of Ground Water and Drinking Water, Standards and Risk Management Division Subject: […]

Toolkit to Participate in National Groundwater Awareness Week March 8-14

Sorry, but only ACWA members have permission to view this content. Member login is required.

Toolkit to Celebrate California Agriculture in March

Sorry, but only ACWA members have permission to view this content. Member login is required.

Comment Letter: U.S. EPA Fluoride in Drinking Water

Sorry, but only ACWA members have permission to view this content. Member login is required.

Comment Letter: AB/SB 107 – Support for Proposition 4 Administrative Procedures Act Exemptions

To: Senate President pro Tempore Limón, Assembly Speaker Rivas, Budget Chairs Laird and Gabriel Subject: AB/SB 107 – Support for […]

Coalition Letter: Development of Extended Range Atmospheric River Forecasting – Budget Request

Sorry, but only ACWA members have permission to view this content. Member login is required.

Comment Letter: Revised Draft Sacramento/Delta Bay-Delta Plan Updates & Ch. 13 of Draft Staff Report

To: Mr. Erik Ekdahl, Chief Deputy Director, Division of Water Rights, State Water Resources Control Board Subject: Revised Draft Sacramento/Delta […]

Regulatory Roundup

The following document is released each month and includes policy updates from ACWA’s Regulatory Department. Click on the below link […]

Suggested News

15 Articles prev next
OCWD and OC San Unveil GWRS Brew Made with Purified Recycled Water

The Orange County Water District (OCWD) and the Orange County Sanitation District (OC San) unveiled a commemorative, limited-edition beer made […]

Dry March Leaves No Measurable Snow for April Survey

SACRAMENTO – The Department of Water Resources (DWR) today conducted the critical April snow survey at Phillips Station and found […]

Mojave Water Agency hosts Pathfinder Day

APPLE VALLEY — Mojave Water Agency (MWA) recently welcomed local high school students to its Operations Center for a special […]

Helix Water District Builds Model EV Charging Hub

EL CAJON — Helix Water District has transformed its operations center in San Diego’s east county suburbs into one of […]

Bay Area Public Water and Wastewater Utilities Build Advanced Radar Network

SAN FRANCISCO — The San Francisco Public Utilities Commission (SFPUC), along with a coalition of other Bay Area water, wastewater, […]

BCVWD Recognized with GFOA Award for Financial Reporting Excellence

BEAUMONT – The Beaumont-Cherry Valley Water District (BCVWD) has been awarded the Certificate of Achievement for Excellence in Financial Reporting […]

ACWA-Sponsored Wildfire Bill Moves Forward

ACWA-sponsored SB 1153 (Caballero) unanimously passed out of the Senate Emergency Management Committee March 24. The bill would clarify the […]

WVWD Awarded “Triple Crown” for Excellence in Financial Reporting

RIALTO – West Valley Water District (WVWD) is proud to announce for the fourth year in a row it has […]

LAO Acknowledges Potential Benefits of Healthy Rivers and Landscapes Program

SACRAMENTO — The Legislative Analyst’s Office (LAO) on March 18 issued a report on the Bay-Delta Plan and Voluntary Agreements, […]

Westlands Responds to Updated CVP Allocation

FRESNO – Today, the Bureau of Reclamation announced an updated allocation increasing from 15 to 20 percent for Westlands Water […]

MCWD Begins Rehabilitation of Reservation Road Desalination Plant

Marina Coast Water District (MCWD) has begun rehabilitation of its existing desalination (desal) system on Reservation Road, with active construction […]

DWR Approves Assignment of State Water Project Contract

BUELLTON – The Central Coast Water Authority (CCWA) is pleased to announce that the State of California’s Department of Water […]

ACWA Board Adopts Vision Recommendations; Rollout Coming Soon

SACRAMENTO – Today, the Association of California Water Agencies (ACWA) Board of Directors has unanimously adopted a new Vision policy […]

ACWA’s ‘2025 Year in Review’ Now Available

ACWA’s “2025 Year in Review” publication is now available to read and download online. Member agencies also received a printed […]

March 2026 ACWA News Available

Sorry, but only ACWA members have permission to view this content. Member login is required.