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 January 15, 2020

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

Snowpack in the Green River Basin is about average for this time of year. Snowpack usually starts building in early November, peaks in early April and melts in June.

Streamflow in the Green River is expected to be near or above average for the next several months.

Howard Hanson Dam is operating for flood management. The reservoir is kept empty for flood storage until filling operations begin at the end of February.

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