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Annual Assessment Data

The 2020 Water Shortage Contingency Plan includes key data inputs and methodologies for conducting an Annual Water Supply and Demand Assessment. The CCSD continuously tracks water supply conditions to help forecast the estimated supply availability based on either the estimated dry season start date, streamflow monitoring, estimated dry season length, or the hydrologic year-type classification. Specific criteria include:

  • Dry season start date
  • Rainfall totals
  • Groundwater levels
  • 9P2/SS4 gradient

Historic Monthly Averages

Historic monthly averages for the metrics utilized to complete the Annual Assessment are included below. These averages are based on available data from 1998 through 2020.

April 1st 

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May 1st

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June 1st

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July 1st

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August 1st

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September 1st

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October 1st

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November 1st

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December 1st

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