State Plan of Flood Control Descriptive Document 2016 Update

California Department of Water Resources (DWR) | December 14th, 2016

The November 2016 State Plan of Flood Control (SPFC) Descriptive Document Update (2016 Update) is intended to serve as a reference for flood management planners and opera

The November 2016 State Plan of Flood Control (SPFC) Descriptive Document Update (2016 Update) is intended to serve as a reference for flood management planners and operators at the local, State, and federal levels. It is not a stand-alone document; rather, it works in conjunction with the November 2010 SPFC Descriptive Document, builds upon information presented in the original report, and documents changes to the SPFC that have occurred between November 2010 and July 2016. The 2016 Update documents the inventory of flood control projects and works (facilities), lands, programs, plans, conditions, and mode of operations and maintenance for the State-federal flood management system in the Sacramento River and San Joaquin River watersheds of California, as well as informs the 2017 Central Valley Flood Protection Plan Update. In 2006 and 2007, California voters approved the Disaster Preparedness and Flood Prevention Bond Act of 2006 and the Central Valley Flood Protection Act of 2008 respectively. These acts defined the Sacramento River and San Joaquin River federal-State flood control projects as the SPFC, and required DWR to develop, and the Central Valley Flood Protection Board to adopt, a Central Valley Flood Protection Plan. The Central Valley Flood Protection Plan is broader than the SPFC, affecting the entire watersheds of the Sacramento and San Joaquin valleys. A complex system of dams and reservoirs, levees, weirs, bypasses, and other features constructed piecemeal over the last 100 years protects urban and rural areas against most flooding. This system has prevented billions of dollars in damage in its lifetime. A portion of this complex flood protection system includes State and federally authorized projects for which the Central Valley Flood Protection Board or DWR has provided assurances of cooperation to the federal government, known as the SPFC. These statutory authorizations include provisions regarding responsibility for operation and maintenance of the flood control facilities. The California Legislature has authorized funding for numerous flood control projects throughout the Sacramento and San Joaquin River watersheds. As the SPFC evolves, updates to the SPFC Descriptive Document will be useful in determining funding eligibility for funding for facility improvements. RELATED DOCUMENT:  State Plan of Flood Control (2010)

State Plan of Flood Control Descriptive Document Update (2017)

California Department of Water Resources (DWR) | August 10th, 2017

The State Plan of Flood Control (SPFC) Descriptive Document, November 2010, provided the first inventory and description of the flood management projects and features (fa

The State Plan of Flood Control (SPFC) Descriptive Document, November 2010, provided the first inventory and description of the flood management projects and features (facilities), lands, programs, plans, conditions, and mode of operations and maintenance for the State-federal flood management system in the Sacramento River and San Joaquin River watersheds of California. The 2010 Descriptive Document was prepared in response to Proposition 1E (Disaster Preparedness and Flood Prevention Act of 2006), which required that information on the SPFC “…. be updated and compiled into a single document entitled, ‘The State Plan of Flood Control.’” Similar information is required to be a part of the CVFPP pursuant to the Central Valley Flood Protection Act of 2008. Legislation relevant to this document can be found in Appendix A. While much of the information contained in the 2010 Descriptive Document has not changed, it was anticipated that future updates would be necessary to keep the SPFC description current as new or ongoing projects were completed. Also, updates to the SPFC would be appropriate to reflect any additional or new documentation discovered on existing projects that would meet the requirements of the SPFC. The purpose of this update to the 2010 Descriptive Document is to describe changes that have occurred to the SPFC since the 2010 Descriptive Document due to project implementation and other related changes. This document also supports the data and analysis of the 2017 Central Valley Flood Protection Plan Update (CVFPP) and the 2017 Flood System Status Report (FSSR). The SPFC Descriptive Document Update (Update) is structured as a reference document and should be used in conjunction with the 2010 Descriptive Document to represent the SPFC as of June 30, 2016. It includes narrative descriptions, tables, figures, web links, and maps, to help the reader find information for this complex flood management system. Figure G-1 shows a geographic overview of the SPFC. Consistent with the 2010 Descriptive Document level of detail, this report describes changes to the major elements of the SPFC, but only to a level of detail necessary to orient the reader to the SPFC and reference where more information can be found. For example, a given reach of levee may have many encroachments such as pipes that cross under, through, or over the levee. In addition, a given river reach may have associated bridges, stream gages, drainage facilities, etc. No attempt was made to itemize all these encroachments and associated facilities in this Update. Because of the volume of available information, a reference digital versatile disc (DVD) was provided in the pocket at the end of the 2010 Descriptive Document. The DVD provided more details than could be contained in the text of the 2010 report. The contents of the 2010 Reference DVD, excluding the SPFC Mapbook and O&M manual database, is located on the 2012 CVFPP webpage at http://www.water.ca.gov/cvfmp/2012-cvfpp-docs.cfm.

State Water Project , Historical Table A Allocations, Water Years 1996-2024

California Department of Water Resources (DWR) | November 30th, 2023

State Water Project Adaptation Strategy

California Department of Water Resources (DWR) | August 20th, 2025

This State Water Project Adaptation Strategy, developed by the California Department of Water Resources (DWR), presents a forward-looking roadmap for adapting the State W

This State Water Project Adaptation Strategy, developed by the California Department of Water Resources (DWR), presents a forward-looking roadmap for adapting the State Water Project (SWP) to the challenges posed by a changing climate. The SWP is one of the largest State-built water and power systems in the United States, conveying water through over 700 miles of canal. Starting in northern California and running through the Central Valley and Southern California, it supplies water to 27 million residents, 750,000 acres of farmland, and supports over $2.3 trillion in economic activity. With climate change accelerating the frequency and intensity of droughts, floods, wildfires, and sea level rise, the SWP must be modernized to ensure long-term sustainability, reliability, and affordability in water distribution.

State Water Project Allocations, Historical Table A, Water Years 1996-2022

California Department of Water Resources (DWR) | August 30th, 2022

State Water Project Allocations, Historical Table A, Water Years 1996-2023

California Department of Water Resources (DWR) | December 1st, 2022

State Water Project and Central Valley Project Drought Contingency Plan May 1, 2021 – September 30, 2021

California Department of Water Resources (DWR) | May 28th, 2021

This Drought Contingency Plan (Drought Plan) is prepared by the California Department of Water Resources (DWR) and the U.S. Bureau of Reclamation (Reclamation) in an effo

This Drought Contingency Plan (Drought Plan) is prepared by the California Department of Water Resources (DWR) and the U.S. Bureau of Reclamation (Reclamation) in an effort to provide updated information about areas of potential concern given the current dry hydrology of 2021. DWR and Reclamation operate the State Water Project (SWP) and the Central Valley Project (CVP), respectively, to the 2020 Record of Decision (ROD) as analyzed in the 2019 U.S. Fish and Wildlife Service (USFWS) Biological Opinion and 2019 National Marine Fisheries Service (NMFS) Biological Opinion on the Coordinated Long-Term Operation of the Central Valley Project and the State Water Project (Collectively the 2019 Biological Opinions), and DWR also operates the SWP to the 2020 California Department of Fish and Wildlife (CDFW) Incidental Take Permit (ITP). This updated Drought Plan will be submitted by DWR to CDFW in response to Condition 8.21 of CDFW’s ITP. Concurrently, this plan will be shared with the Water Operations Management Team (WOMT) which includes representatives from DWR, Reclamation, USFWS, NMFS, CDFW, and the State Water Resources Control Board (SWRCB) (collectively referred to as Agencies). This report was first drafted in February and subsequently updated in March, April, and May 2021.

State Water Project Historical Table A Allocations, Water Years 1996-2024

California Department of Water Resources (DWR)ia | June 5th, 2024

State Water Project Long-Term Drought Plan

California Department of Water Resources (DWR) | May 21st, 2024

The 2024 State Water Project (SWP) Long-Term Drought Plan consolidates information and actions taken during past droughts along with descriptions of the actions taken by

The 2024 State Water Project (SWP) Long-Term Drought Plan consolidates information and actions taken during past droughts along with descriptions of the actions taken by the SWP to plan for and prepare for future droughts.

State Water Project Table A Allocations 1967-1995

California Department of Water Resources (DWR) | January 14th, 2022