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Tucannon River

  • 6 min read
  • 3 chapters

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Through Watt and Threatened species

Watershed

The Tucannon basin of 502 square miles (1,300 km2) ranges in elevation from about 540 feet (165 m) above sea level at the mouth on the Snake River to about 6,400 feet (1,950 m) in the Umatilla National Forest of the Blue Mountains.

River flows in the Tucannon basin depend solely on precipitation and groundwater. Studies in the early 1990s suggested that these flows would not be able to meet all of the claims, public and private, on the water resources of the lower river. In particular, farm irrigation projects were competing with fisheries for limited water. The Washington Department of Ecology named the Tucannon basin a Watershed Resource Inventory Area (WRIA) and in 1995 began hearings about how to allocate the water.

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