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Water Source

The source of our water supply varies throughout the year, depending on the season, weather, snowpack level, inflows and water storage conditions.

Our average available supply is 110 million gallons per day. The average use is 55 million gallons per day.

The maximum amount of water available by source is shown below.

  • Green River – 72 million gallons per day
  • 7 North Fork wells (alternative Green River supply) – 84 million gallons per day
  • Local wells – 59 million gallons per day
  • Interruptible Green River supply – 27 million gallons per day

Water Supply Conditions as of September 9, 2020

Our current water supply is more abundant than it has been at this time during the last several years.

Snowpack in the Green River Basin peaked in early April, reached about 90% of average and melted in early June.

We reached full summer storage behind Howard Hanson Dam is greater than usual in July and August.

Streamflow in the Green River is forecast to be about average this summer and fall.

To learn more about your water supply, see the following pages: