Monthly Water Tracker

As of February 1, 2019

We began calendar year 2019 with groundwater storage well within Stage 1 (Normal) of the District’s Water Shortage Contingency Plan despite below-normal local rainfall and statewide snow pack. As of February 1, the statewide average snowpack water equivalent is normal and valley floor precipitation is below normal. Groundwater storage remains healthy due to previous wet years and continued water use reduction by the community.

Weather

• Rainfall in Santa Clara County
• Month of January, City of San Jose: 2.8 inches
• Rainfall year total = 6.89 inches or 86% of average to date (rainfall year is July 1 to June 30)

Local Reservoirs

Current local reservoir storage

• Total February 1 storage: 71,030 acre-feet

  • 82% of 20-year average for that date
  • 43% of total capacity
  • 63% of restricted capacity (166,808 acre-feet total storage capacity limited by seismic restrictions to 111,963 acre-feet)
• Approximately 260 acre-feet imported water was delivered into local reservoirs during January 2019
• Total estimated releases to streams (local and imported water) during January was 6,110 acre-feet

Groundwater

Groundwater Storage:  Total storage at the end of 2019 is predicted to fall within Stage 1 (Normal) of the district's Water Shortage Contingency Plan

Imported Water

• As of January 31, 2019, the Statewide average snowpack water equivalent is 100% of the historic average for this date
• 2019 State Water Project (SWP) and Central Valley Project (CVP) allocations:
  • 2019 SWP allocation of 15%, 15,000 acre-feet, announced on January 25, 2019
  • 2019 South-of-Delta CVP allocations have not yet been identified
• State-wide reservoir storage information, as of February 3, 2019:
  • Shasta Reservoir at 65% of capacity (96% of average for this date)
  • Oroville Reservoir at 41% of capacity (62% of average for this date)
  • San Luis Reservoir at 86% of capacity (109% of average for this date)
• District’s Semitropic groundwater bank reserves are at 84% of capacity, or 292,725 acre-feet as of December 31, 2018
• Estimated SFPUC deliveries to Santa Clara County:
  • Month of December = 3,453 acre-feet
  • 2018 Total to Date = 46,374 acre-feet
  • Five-year annual average is 48,700 acre-feet
• Board Governance Policy No. EL-5.3.3 includes keeping the Board informed of imported water management activities on an ongoing basis.  No imported water management agreements were executed in calendar year 2019 as of January 31, 2019

Treated Water

• Below average demands of 5,514 acre-feet (estimated) delivered in January
• This total is 91% of the five-year average for the month of January
• Year-to-date estimated deliveries = 5,514 acre-feet or 91% of the five-year average

Conserved Water

• Saved 75,000 acre-feet in FY18 from long-term program (baseline year is 1992)
• Long-term program goal is to save nearly 75,000 acre-feet in FY18
• The Board continues its call for a 20% reduction and a limit of three days per week for irrigation of ornamental landscape with potable water
• Achieved a 19% reduction in water use in calendar year 2018, compared to 2013

Recycled Water

• Estimated January 2019 production = 500 acre-feet
• Estimated Year-to-Date through January = 500 acre-feet or 55% of the five-year average
• Silicon Valley Advanced Water Purification Center produced an estimated 1.3 billion gallons (4,000 acre-feet) of purified water in 2018.  Since the beginning of 2019, about 200 acre-feet of purified water has been produced.  The purified water is blended with existing tertiary recycled water for South Bay Water Recycling Program's customers