San Francisco Bay/Sacramento – San Joaquin Delta Estuary (Bay-Delta) Watershed Efforts

Bay-Delta Plan Update

Protecting the Bay-Delta watershed and its many beneficial uses is one of the State Water Board’s primary responsibilities and top priorities.  The State Water Board is responsible for developing and modifying the Bay-Delta Plan which establishes water quality control measures and flow requirements needed to provide reasonable protection of beneficial uses in the watershed. The Board is now engaged in urgent efforts to address prolonged and precipitous declines of native aquatic species in the Bay-Delta and the ecosystem they depend upon.

The Bay-Delta Plan is being updated through two separate processes (Plan amendments). The first Plan amendment is focused on San Joaquin River flows and southern Delta salinity. The second Plan amendment is focused on the Sacramento River and its tributaries, Delta eastside tributaries (including the Calaveras, Cosumnes, and Mokelumne rivers), Delta outflows, and interior Delta flows.

This web page is intended to keep the public and other interests that depend on the Bay Delta system for agriculture, commerce, recreation and environmental pursuits – updated on the latest environmental and regulatory Bay Delta Plan documents that are being developed and considered by the Board.

Below, please find important links to the newest information pertaining to the Bay-Delta Plan updates that are now underway, as well links to a more complete record of historical information:

San Joaquin River Flows and Southern Delta Salinity Sacramento/Delta Flows and Cold Water, Delta Outflows, and Interior Delta Flows
Updated December 12, 2018



Updated July 6, 2018

California WaterFix

In August 2015 the California Department of Water Resources (DWR) and U.S. Bureau of Reclamation (Reclamation) filed a joint change petition to add points of diversion and rediversion on the lower Sacramento River as part of the California WaterFix project.  A hearing on the petition commenced in July 2016 and is continuing. The hearing is subdivided into two parts, with Part 1 focused on the potential effects of the change petition on agricultural, municipal, and industrial uses of water and associated legal users of water as well as conditions that should be placed on any approval of the petition to protect those uses.  Part 2 of the hearing focuses on the potential effects of the petition on fish and wildlife and recreational uses and conditions that should be placed on any approval of the petition to protect those uses, including consideration of appropriate Delta flow criteria as required by the 2009 Delta Reform Act.

In addition, DWR and Reclamation filed an application for a water quality certification pursuant to Section 401 of the Clean Water Act that will be considered administratively in a separate but parallel process.

State Water Board California WaterFix Activities


Drought Information

Information on past Bay-Delta drought activities is provided at the following links:


Bay-Delta Compliance

Information on some of the Bay-Delta compliance issues is located at the following links:


Water Quality Control Plans and Associated Water Right Decisions


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