State Plan of Flood Control Descriptive Document (2010)

California Department of Water Resources (DWR) | January 15th, 2010

This report provides an inventory and description of the existing flood control works (facilities), lands, programs, plans, conditions, and mode of operations and mainten

This report provides an inventory and description of the existing flood control works (facilities), lands, programs, plans, conditions, and mode of operations and maintenance (O&M) for the State-Federal flood protection system in the Central Valley of California. This flood protection system is composed of federally authorized project levees and related facilities for which the State has provided assurances1 of cooperation to the federal government. These State-provided assurances are an important distinction for what constitutes the State-federal flood protection system since other flood protection facilities in the Central Valley are not covered by State assurances and are not part of the State-federal system. Collectively, the facilities, lands, programs, conditions, and mode of O&M for the State-Federal flood protection system in the Central Valley are referred to as the State Plan of Flood Control (SPFC). This SPFC Descriptive Document is the first time that an inventory of the SPFC has been compiled or referenced in a single document. Until now, much of the information on the SPFC has been individually maintained for each of the many flood protection projects that constitute State-federal flood protection along the Sacramento and San Joaquin rivers and tributaries. For example, much of the information contained in sections of this report originates in 118 individual project (unit-specific) O&M manuals. The O&M manuals provide key information about each project and how it should be operated and maintained (see reference digital versatile disc (DVD) at the back of this report). In addition, since the individual projects for the system were implemented over almost a century, some information may have been lost or never obtained. In those cases, gaps exist in the information presented in this report and further research is required. It is important to note that the SPFC is only a portion of the larger system that provides flood protection for the Central Valley. The SPFC relies on many other features that do not meet the definition of the SPFC. For example, non-SPFC reservoirs provide substantial regulation of flows to levels that SPFC facilities can mostly handle. Private levees, locally operated drainage systems, and other facilities work in conjunction with SPFC facilities. Management practices such as emergency response, floodplain management, and other practices are part of the overall flood protection system. All parts of the system, including the SPFC, depend on other parts of the system to operate as a unit. This report is structured as a reference document for the SPFC. It includes narrative descriptions, tables, and figures, especially maps, to help the reader find information for this complex flood management system. Some sections include summary sections for readers who only need an overview of the subject. RELATED DOCUMENT: State Plan of Flood Control Descriptive Document 2016 Update

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 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 Table A Allocations 1967-1995

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

Statistical Methods Development and Sampling Design Optimization to Support Trends Analysis for Loads of Polychlorinated Biphenyls from the Guadalupe River in San Jose, California, USA

San Francisco Estuary Institute (SFEI) | September 3rd, 2018

The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP), with guidance from its Small Tributaries Loading Strategy (STLS) Team, has been conducting s

The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP), with guidance from its Small Tributaries Loading Strategy (STLS) Team, has been conducting small tributary loading studies at several sites in the Bay Area since 2003. A current priority for the STLS is developing a strategy for measuring trends in pollutant loadings from small tributaries to the Bay.  This technical report presents the work to develop a statistical model for trends in loads of polychlorinated biphenyls (PCBs), and estimate the power for proposed monitoring designs as a basis for detecting trends for the Guadalupe River watershed (San Jose, California). The statistical approach builds upon the turbidity surrogate methodology that has been employed in the STLS since 2003. A novel, two-stage statistical modeling approach was used to incorporate the significant turbidity-PCB relationships that exist, and evaluate climatic, seasonal, and inter-annual factors as additional potential drivers of PCB loads. The longest-running time series of tributary monitoring by the STLS on the Guadalupe River was selected as the case study for developing and testing the statistical approach. As a result of this effort, a multiple linear regression model for detecting trends in PCB loads in the Guadalupe River was developed. 

Status and Trends of Delta-Suisun Services

California Department of Water Resources (DWR) | March 1st, 2007

Covering only about 1 percent of California’s area, the Sacramento-San Joaquin Delta, including Suisun Bay and Marsh (hereafter referred to as Delta-Suisun), contribute

Covering only about 1 percent of California’s area, the Sacramento-San Joaquin Delta, including Suisun Bay and Marsh (hereafter referred to as Delta-Suisun), contributes much more to the state and nation than one might expect from its small size. The Delta-Suisun provides a set of environmental and economic services whose benefits extend well beyond its borders. To help people gain a common understanding of these services, this report provides an overview of the existing status of these services and a perspective about how these services may change in the future. This report was prepared to highlight observations and to present a common understanding about the status and trends of key Delta-Suisun services. The Delta Risk Management Strategy (DRMS) is considering these observations while conducting a risk assessment for the Delta-Suisun and will report on its findings in spring 2007. Having a common understanding of the area’s services will benefit ongoing and new Delta-Suisun studies and initiatives. Information in this report will be considered by members of the Delta Vision Blue Ribbon Task Force and Stakeholder Coordination Group as they begin work on the Delta Vision and Strategic Plan.

Status Review of California coho salmon north of San Francisco

California Department of Fish and Wildlife (CDFW) | May 9th, 2002

On July 28, 2000, the Fish and Game Commission (Commission) received a petition to list coho salmon north of San Francisco as an endangered species under provisions of th

On July 28, 2000, the Fish and Game Commission (Commission) received a petition to list coho salmon north of San Francisco as an endangered species under provisions of the California Endangered Species Act (CESA). The Commission referred the petition to the Department of Fish and Game (Department) on August 7, 2000, for evaluation. The Department found that the information in the petition was sufficient to indicate the action may be warranted and recommended the Commission accept the petition. The petition was accepted by the Commission on April 5, 2001. On April 27, 2001 the Commission published a Notice of Findings in the California Regulatory Notice Register declaring coho salmon a candidate species, thereby starting the candidacy period. The Department solicited information and undertook a status review of the species using the best scientific information available. This report contains the results of the Department’s status review and recommendations to the Commission. The Department evaluated the status separately for the two coho salmon Evolutionarily Significant Units (ESU) that occur in California: Southern Oregon/Northern California Coast Coho ESU (SONCC Coho ESU - those populations from Punta Gorda north to the Oregon border) and the Central California Coast Coho ESU (CCC Coho ESU - those populations from San Francisco Bay north to Punta Gorda). This approach is consistent with previous listings, the federal approach to species’ evaluation, and the generally accepted biological criterion that a species is “a group of interbreeding organisms that is reproductively isolated from other such groups.”