San Francisco Bay Delta

Technical Support and Regulatory Assistance

EPA provides technical support and regulatory assistance for priority activities designed to address water supply and aquatic life protection in the Delta. Recent documents and products are provided below along with technical products that supported water quality standards and protection of aquatic life in the mid 1990s.

2011 EPA Low Salinity Zone Workshop

EPA convened a technical workshop to evaluate the relationship between the low salinity zone (where marine and freshwater mix) and aquatic life populations including fish, zooplankton, and phytoplankton.  Workshop products were provided to the State Water Resources Control Board to use as they consider updates to water quality standards intended to protect aquatic life.
Read the workshop products

2010 Flow Criteria for the Sacramento-San Joaquin Delta Ecosystem

  • Delta Flow Criteria Presentation (PDF) (24 pp, 2 MB) : Presentation by Dr. Bruce Herbold, EPA R9 Fisheries Biologist, to the State Water Resources Control Board at the March 22 - 24 Delta Flow Criteria hearing.
  • Delta Flow Criteria Written Comments (PDF) (4 pp, 75 K) : Written comments by Dr. Bruce Herbold, EPA R9 Fisheries Biologist, to the State Water Resources Control Board following the March 22 - 24 Delta Flow Criteria hearing.

2008 California State Water Resources Control Board Strategic Workplan for the Bay-Delta

1993 San Francisco Estuary Project Managing Freshwater Discharge to the San Francisco Bay/Sacramento-San Joaquin Delta Estuary, the Scientific Basis for an Estuarine Standard


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