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.