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Water Facts

Did you know...

  • Your drinking water is filtered naturally through sixty feet of riverbed gravel and sand, and meets or exceeds over a hundred different standards for drinking water quality?
  • The amount of water we deliver on a hot summer day (80 million gallons) could fill 1.28 billion cups of coffee?
  • On average, a Sonoma County household of four uses about 200,000 gallons of water annually for indoor and outdoor use?
  • During our summer months the Russian River is one of the most heavily used streams for canoeing in the nation?
  • Thirty-four species of fish, including steelhead trout, striped bass, American shad, and coho and chinook salmon, call the Russian River watershed and it's tributaries home?
  • Our water-inflated rubber dam is the width of the Russian River, tall enough to drive a car through and is equipped with two fish ladders?
  • If you emptied a five-gallon bucket of water into our largest water tank every five minutes for ten hours a day and seven days a week, it would take you 82 years to fill the tank?
  • An acre-foot is the amount of water required to fill one acre of land to a depth of one foot?
  • One acre-foot supplies the annual water needs of approximately two households?

The Russian River

  • Originates in central Mendocino County, approximately 15 miles north of Ukiah
  • Drains 1,485 square miles including much of Sonoma and Mendocino counties
  • Meets the Pacific Ocean at Jenner, 20 miles west of Santa Rosa
  • Main channel length is 110 miles
  • Five principal tributaries: the East Fork of the Russian River, Big Sulphur Creek, Mark West Creek, Maacama Creek, and Dry Creek

The Reservoirs

Lake Pillsbury on the Eel River

  • Scott Dam: constructed 1921, concrete gravity dam
  • Drainage area: 298 square miles
  • Storage capacity: 81,160 acre-feet

Lake Mendocino on the East Fork of the Russian River

  • Coyote Valley Dam Project: constructed 1959, rolled earth embankment dam
  • Drainage area: 105 square miles
  • Design capacity: 122,500 acre-feet

Lake Sonoma on Dry Creek

  • Warm Springs Dam: constructed 1984, rolled earth embankment dam
  • Drainage area: 130 square miles
  • Storage capacity: 381,000 acre-feet.