The Need

New Delta Conveyance

Prior Decisions



Fact Sheet:

5 Reasons
to Invest in a Delta conveyance project

Earthquakes, drought, replenishing groundwater basins… a project to modernize Delta conveyance addresses current and future water needs of Southern California. Learn more about why this project is a necessary solution for meeting our ever increasing water demands.

View the Fact Sheet

Metropolitan statement
on new single-tunnel
Delta conveyance project

"Governor Newsom and Natural Resources Secretary Crowfoot recognize that the status quo in the Delta is simply not an option. New conveyance is essential." - Jeffrey Kightlinger, Metropolitan General Manager

View the Full Statement

Related Materials

Opportunities for Contractors

Contractors interested on working on the Delta conveyance project can now access bid opportunities from the Delta Conveyance Design and Construction Authority, the agency responsible for the design, construction and delivery of the project.

Register as a vendor

When the Levee Breaks:

Cascading failures in the Sacramento-
San Joaquin River Delta, California

"If we suffer a catastrophic failure of our water distribution system due to an earthquake in the Delta before we act, history will not judge our political and engineering leaders kindly. The threat is real, and the science refutes those who would deny it. We must act." - Jonathan Stewart, Ph.D., UCLA professor of geotechnical engineering, earthquake engineering, and engineering seismology

Read the Article

About 30 percent of Southern California’s water comes from Northern California via the State Water Project. But aging infrastructure and the declining health of the Delta ecosystem threaten the reliable delivery of water supplies to Southern California. Modernizing the Delta conveyance system will strengthen the state’s water transportation infrastructure and improve conditions for the Delta’s wildlife.

Water projects require vision, leadership, and thoughtful and deliberate decisions, because they take a long time. We have to be visionaries and advance that vision together... because together we are so much stronger than we are apart.

- Gloria Gray, Metropolitan Board Chairwoman


The materials below are designed to educate and inform Southern Californians on the Delta conveyance project.


The mission of the Metropolitan Water District of Southern California is to provide its service area with adequate and reliable supplies of high-quality water to meet present and future needs in an environmentally and economically responsible way.


The Metropolitan Water District of Southern California is a state-established cooperative of 26 member agencies – cities and public water agencies – that serve nearly 19 million people in six counties. Metropolitan imports water from the Colorado River and Northern California to supplement local supplies and helps its members develop increased water conservation, recycling, storage and other resource management programs.

Metropolitain Water District of Southern California BE INFORMED, BE INVOLVED


© 2018 The Metropolitan Water District of Southern California. All rights reserved. Some photos featured on this website are courtesy of DWR.