Dry Falls Dam

Dry Falls Dam
Location Grant County, Washington, USA
Coordinates [1]
Opening date 1949[2]
Dam and spillways
Height 123 feet (37 m)[2]
Length 9,800 feet (2,990 m)[2]
Impounds Grand Coulee
Reservoir
Creates Banks Lake
Capacity 1,275,000 acre feet (1.57 km3)[2]
Catchment area 263 square miles (681 km2)[2]
Surface area 27,000 acres (109 km2)[2]

Dry Falls Dam is a rockfaced earthfill-type[3] dam in the U.S. state of Washington. Located in Grant County near Coulee City, it was built as part of the Bureau of Reclamation's Columbia Basin Project. Water from the Columbia River, impounded by Grand Coulee Dam, is pumped into Grand Coulee, a formerly dry canyon, via the short Feeder Canal. Grand Coulee's north end is sealed by North Dam and Dry Falls Dam stretches across the mid-section of the Coulee. This allows the water pumped from the Columbia River to fill the upper Grand Coulee, creating a large equalizing reservoir known as Banks Lake. Water from the reservoir is fed into the irrigation project's Main Canal, which runs south from Dry Falls Dam to another reservoir called Billy Clapp Lake, formed by Pinto Dam.

References

  1. ^ U.S. Geological Survey Geographic Names Information System: Dry Falls Dam
  2. ^ a b c d e f Dry Falls Dam, NPDP Dam Directory
  3. ^ Columbia Basin Project, Bureau of Reclamation

External links

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