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Pelton Dam is a major dam on the Deschutes River in Jefferson County, Oregon, owned and operated as a hydroelectric facility by Portland General Electric, one element of its Pelton Round Butte Project on the Deschutes.

The concrete arch dam at Pelton dates from 1958, has a height of 204 feet (62 m) from bedrock, a width of 965 feet (294 m) at its crest, and generates 110 megawatts of electricity.[1]

Upstream, to the south, Pelton Dam impounds the waters of the Deschutes to create the deep Lake Simtustus in a relatively narrow canyon about 7 miles (11 km) back to the 1964 Round Butte Dam. The lake has a surface area of about 540 acres (220 ha) and holds 33,190 acre-feet (40,940,000 m³) of water. The name "Simtustus" honors a native who scouted for the U.S. Army during the 1867–68 campaign against the Paiutes.[2]

Downstream, 2.5 miles (4 km) north, a regulating dam controls the river flow. The area between is called the Pelton Regulating Reservoir. In 1982 the Confederated Tribes of Warm Springs installed a hydroelectric turbine unit in the regulating dam for additional power.[3] Between 2000 and 2005 the CTWS also asserted itself as a stakeholder in the project's re-licensing negotiations between Portland General Electric and the Federal Energy Regulatory Commission, winning key environmental, cultural, and water rights concessions.[4]

References

На других языках

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[de] Lake Simtustus

Der Lake Simtustus ist ein Stausee im Jefferson County im US-Bundesstaat Oregon, 11 km nordwestlich von Madras. Der Deschutes River wird durch den zwischen 1956 und 1958 erbauten Pelton Dam zum Lake Simtustus aufgestaut. Die 294 m weite Bogenstaumauer aus Beton ist 62 m hoch, an ihrer Basis 8 m und auf der Mauerkrone 2,4 m breit. Drei Generatoren erzeugen durch Wasserkraft Strom für mehr als 45.000 Haushalte.

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- [en] Pelton Dam

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