Delta Conveyance Updates

Aerial view of the the Sacramento-San Joaquin Delta

The upcoming year will mark an important milestone in the proposed Delta Conveyance Project planning process, with the anticipated release of the Draft Environmental Impact Report (EIR) for public review and comment in mid-2022.

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Sacramento River Winter-Run Chinook Salmon

The Sacramento-San Joaquin Delta is one of the largest estuaries in North America, providing habitat for around 500 plant and animal species, including about 50 species of fish. Approximately two thirds of California's salmon pass through the Delta on their way upstream to spawn.

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Historical and projected California snowpack

Rain and snowfall in California have always been inconsistent and unpredictable. It is our climate’s natural state. The realities of climate change, that take the inconsistent nature of precipitation in California to an extreme, are making water management that much more of a challenge. The proposed Delta Conveyance Project is just one way the stat ...

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Environmental Justice Delta Conveyance graphic

As efforts continue to plan and obtain all permits for a single tunnel project to modernize Delta conveyance, the Department of Water Resources’ (DWR) ongoing environmental review process will provide the public an opportunity to review and comment on the proposed project, including the potential environmental impacts and associated mitigation meas ...

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Sacramento River Winter-Run Chinook Salmon

As planning and environmental review efforts continue to support DWR's determination of whether a single tunnel option to modernize Delta conveyance should be approved, an important component of the environmental review process is to assess environmental resource impacts within the Sacramento-San Joaquin Delta’s (Delta) estuary.

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Aerial view looking south along Old River in the center is Fay Island, part of the Sacramento-San Joaquin River Delta in San Joaquin County, California.

For the first episode in a special two-part Delta Conveyance Deep Dive series on tunnel construction, we invited two of the Delta Conveyance Project design team's leading consultants on tunnel design and engineering to talk about the state‑of‑the‑art technology that would be used to build the Delta Conveyance Project.

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Contact Us

Questions and More Information:
1-866-924-9955 | deltaconveyance@water.ca.gov

Media Inquiries:
Lisa Lien-Mager (916) 653-9402
Lisa.LienMager@resources.ca.gov


Ryan Endean (916) 798-1701
Ryan.Endean@water.ca.gov