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State Water Resources Control Board Releases Phase II Scientific Basis Report

The State Water Resources Control Board (State Water Board) has proposed additional flows from the Sacramento River Basin in its new documents posted on its website related to the Phase II update of the Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Estuary (Bay-Delta Plan).  Phase II addresses requirements for flows and cold water habitat in the Sacramento River, its tributaries, and tributaries to the Delta (including the Mokelumne, Cosumnes and Calaveras rivers); Delta outflows; and water project operations in the interior Delta.  The documents that were posted include:

  • a Fact Sheet on the current status of the Phase II process, including a description of the proposed changes to the Bay-Delta Plan’s water quality objectives and implementation approach;
  • a notice informing interested persons how to stay updated on the Phase II process (this notice was also mailed to water users and others);
  • a series of questions for public input to help inform potential Phase II implementation measures in the Bay-Delta Plan, with comments due on November 9, 2017;
  • the final Scientific Basis Report supporting potential Phase II changes to the Bay-Delta Plan and information on peer review of the report, including responses to peer review comments; and
  • hydrologic modeling information (the Sacramento Water Allocation Model or SacWAM) in support of Phase II, including an updated model and model output and responses to peer review comments on the model.

Responses to the questions are due on November 9. For additional information concerning the State Water Board’s current process to update the Bay-Delta Plan, please visit the State Water Board’s Bay-Delta Program webpage here.