Bay Area Water Supply Monitor

This water supply monitor was developed by the Bay Area Regional Reliability (BARR) Partnership, a collaboration of eight Bay Area water agencies working together to improve regional water supply reliability.

Bay Area water providers regularly monitor supply conditions to inform water management actions, as described in the BARR Drought Contingency Plan. This map reflects supply conditions for individual BARR agencies and some water suppliers in the North Bay Area as of April 2018, based on Water Shortage Contingency Plan (WSCP) stages—i.e., supply thresholds/triggers and associated actions, unique to each agency. Lower stages indicate more plentiful supplies, while higher stages indicate shortages of varying degrees.

Though this map is only updated once a year and represents a snapshot in time, agencies regularly monitor their supplies and regularly update their individual websites (linked below) to reflect current conditions and calls for voluntary or mandatory conservation.

  • Alameda County Water District (ACWD), – ACWD is in WSCP Stage 0 (no supply shortage). 
  • Bay Area Water Supply and Conservation Agency (BAWSCA), – BAWSCA member agencies have individual contracts with SFPUC, which provides a significant portion of their water supplies. Some BAWSCA member agencies also receive water from SCVWD. 
  • Contra Costa Water District (CCWD), – CCWD is in WSCP Stage 0 (no shortage). 
  • East Bay Municipal Utility District (EBMUD), – EBMUD is in WSCP Stage 0 (normal conditions), which sets a demand reduction requirement of “wise water use.” 
  • Marin Municipal Water District (MMWD), – MMWD is in WSCP Stage 0 (no shortage). 
  • San Francisco Public Utilities Commission (SFPUC), – SFPUC is in WSCP Stage 0 (no system-wide supply shortage and no call for conservation). 
  • Santa Clara Valley Water District (SCVWD), – The District is in Stage 1 (normal supply conditions), and the Board has called for the community to voluntarily save 20%. 
  • Zone 7 Water Agency, – Zone 7 is in WSCP Stage 0 (no supply shortage). 
  • City of Napa, – The City is in WSCP Stage 0 (no shortage). 
  • Solano County Water Agency (SCWA) – SCWA has no supply shortages.

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