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Monthly Water Tracker

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As of June 1, 2024

On April 23, 2024, the California Department of Water Resources announced an increase in State Water Project (SWP) allocation from 30% to 40% of contract amount for 2024. On April 24, 2024, the U.S. Bureau of Reclamation (Bureau) announced an increase to the 2024 south-of-delta Central Valley Project (CVP) agricultural allocation from 35% to 40%; however, the Bureau kept the Municipal and Industrial (M&I) allocation at 75% of historic M&I. On June 13, 2023, the Board of Directors adopted a resolution to support water conservation as a way of life and an ordinance with a set of permanent water waste prohibitions for Santa Clara County.

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Water Tracker June 2024.pdf 173.04 KB

Weather

  • Rainfall in Santa Clara County
    • Month of May, City of San José: 0.63 inches
  • Rainfall year total = 15.39 inches or 109% of average to date (rainfall year is July 1 to June 30)
  • May 31 Northern Sierra snowpack was 77% of normal for this date
  • San José average daily high temperature was 76.7 degrees Fahrenheit in May, which is higher than the five-year average for May (74.0 degrees Fahrenheit)

Local Reservoirs

Current local reservoir storage

  • Total June 1 storage = 59,924 acre-feet
  • No imported water was delivered into Calero Reservoir during May 2024
  • Total estimated releases to streams (local and imported water) during May were 6,900 acre-feet (based on preliminary hydrologic data)

Groundwater

Groundwater conditions remain healthy throughout the county. Groundwater levels in all regional monitoring wells except one are lower than last month, indicating typical seasonal declines have begun. While most water levels are lower relative to May 2023, all are higher than the prior five-year average for May. The end of 2024 groundwater storage is projected to be in Stage 1 (Normal) of the Water Shortage Contingency Plan

Table of groundwater sub-basin levels for the month

Imported Water

  • In May (through May 31st), the SWP operated Banks pumping plant with an average daily export of 1,175 acre-feet, resulting in a total export of 36,414 acre-feet from the Sacramento-San Joaquin Delta for the month
  • In May (through May 31st), the CVP operated Jones pumping plant with an average daily export of 4,323 acre-feet, resulting in a total export of 134,006 acre-feet from the Sacramento-San Joaquin Delta for the month
  • Multiple fish protection thresholds were triggered at the Sacramento-San Joaquin Delta export facilities this winter/spring. The most limiting export restriction remained in effect for both the SWP and CVP through May 31st

Click here to find the State-Wide Reservoir Storage map and table


Treated Water

  • Below average demands of 7,567 acre-feet were delivered in May
  • This total is 82% of the five-year average for the month of May
  • Year-to-date deliveries are 22,411 acre-feet or 70% of the five-year average

Conserved Water

  • Saved 83,174 acre-feet in FY23 through Valley Water’s long-term conservation program (baseline year is 1992)
  • Long-term program goal is to save nearly 100,000 acre-feet by 2030 and 110,000 acre-feet by 2040
  • On June 13, 2023, the Board of Directors adopted a resolution to support water conservation as a way of life in Santa Clara County and an ordinance with a set of permanent water waste prohibitions

Recycled Water

  • Estimated May 2024 production = 1,519 acre-feet
  • Estimated year-to-date through May = 5,594 acre-feet or 109% of the five-year average
  • Silicon Valley Advanced Water Purification Center produced an estimated 1.5 billion gallons (4,493 acre-feet) of purified water in 2023. Since the beginning of 2024, about 1,533 acre-feet of purified water has been produced.  The purified water is blended with existing tertiary recycled water for South Bay Water Recycling Program customers