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Bay-Delta Office
Department of Water Resources

1416 9th Street,
Sacramento, Ca 95814

Mailing Address:
P. O. Box 942836,
Sacramento, Ca 94236-0001

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  wedge  Program Overview

Formerly known as the Office of SWP Planning, the BAY-DELTA OFFICE (BDO) was formally established by the California State Department of Water Resources on July 1, 2002. The August 2000 Record of Decision for the CALFED Bay-Delta Program directs the Department of Water Resources and its federal counterparts to manage program elements contained in the CALFED Conveyance Program and the CALFED Levee System Integrity Program. The Bay-Delta Office is responsible for planning and implementing projects and actions contained in these two program elements to ultimately improve conveyance, water quality, and flood protection in the Sacramento-San Joaquin Delta, while providing for enhanced ecosystem benefits.

Through its three organizational Branches, the Bay-Delta Office conducts environmental and engineering studies, evaluates proposed improvements to existing facilities, analyzes alternatives for new facilities, directs planning and permitting activities, prepares environmental documentation, coordinates activities with various State and federal regulatory agencies, provides financial assistance to local agencies, performs hydrologic and hydrodynamic computer modeling, and educates the public about Delta issues.

  wedge  Overview of Bay-Delta Organizational Branches

Modeling Support Branch

The Branch’s primary functions are to:

  • Develop, maintain, and apply computer models to simulate the hydrodynamics and water quality of the Sacramento-San Joaquin Delta. Models are used to predict hydraulic and water quality impacts from proposed changes in project facilities and operations in the Bay-Delta region.
  • Develop Central Valley hydrology flow estimates and computer models. The Branch develops and uses hydrology data to provide present and future statewide water supply estimates, and for input to DWR planning simulation models.
  • Develop, maintain, and apply computer simulation models for water resources planning. The Branch’s activities support planning analyses and operational decisions for the State Water Project and Central Valley Project. Computer models are used to simulate the SWP/CVP system of reservoirs and conveyance facilities, as well as other local projects, to evaluate water supply alternatives and operations criteria, and to determine impacts of proposed Bay-Delta protection objectives.

Delta Conveyance Branch

The Branch’s primary functions are to:

  • Plan and implement projects to improve water quality and supply reliability, protect fish, and enhance the ecosystem in cooperation with other State, federal, and local agencies, and other interested stakeholders. The Branch is responsible for management of the CALFED Conveyance Plan, Flooded Islands Project, Franks Tract Project, the Delta Cross Channel Re-operation, Through-Delta Facilities Project, Clifton Court Forebay Fish Screen and Intake Projects.

South Delta Branch

The Branch’s primary functions are to:

  • Plan and implement projects and actions in the South Delta as part of the CALFED Conveyance Program. The Branch conducts engineering and environmental studies to improve the operation of existing facilities, and plans new facilities to improve water supply reliability and quality for local uses and SWP/CVP exports. The Branch also analyzes related actions to develop and improve aquatic habitat. Current projects of the South Delta Improvements Program include: conducting studies and preparing environmental documentation to increase SWP export capability to 8,500 cfs; modifying existing pumping criteria to allow greater use of SWP export capacity and restore operational flexibility; installing permanent operable gates in the South Delta; evaluating measures to reduce agricultural drainage from Veale and Byron Tracts; and assessing improved flood control measures on the lower San Joaquin River.
  • Manage the South Delta Temporary Barriers Project. The Branch maintains permits and administers the annual construction, operation, and monitoring of the Temporary Barriers Project. The Branch also takes actions to protect navigation and ensure water of adequate quantity and quality for South Delta agricultural diverters.

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