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Kachess Lake

1912 establishments in Washington (state)Buildings and structures in Kittitas County, WashingtonDams completed in 1912Dams in Washington (state)Historic American Engineering Record in Washington (state)
Lakes of Kittitas County, WashingtonProtected areas of Kittitas County, WashingtonReservoirs in Washington (state)Tributaries of the Yakima RiverUnited States Bureau of Reclamation damsUse mdy dates from February 2025Wenatchee National Forest
Kachess Lake (192351699)
Kachess Lake (192351699)

Kachess Lake () is a lake and reservoir along the course of the Kachess River in Kittitas County, Washington, United States. The upper part of the lake, north of a narrows, is called Little Kachess Lake. The Kachess River flows into the lake from the north, and out from the south. Kachess Lake is the middle of the three large lakes which straddle Interstate 90 north of the Yakima River in the Cascade Range. The other two are Cle Elum Lake, the easternmost which is also north of I-90 and Keechelus Lake, the westernmost, which is south of I-90. Kachess Lake is part of the Columbia River basin, the Kachess River being a tributary of the Yakima River, which is a tributary to the Columbia River. The lake is used as a storage reservoir for the Yakima Project, an irrigation project run by the United States Bureau of Reclamation. Although a natural lake, Kachess Lake's capacity and discharge is controlled by Kachess Dam, a 115-foot (35 m) high earthfill structure built in 1912. The discharge channel for Kachess Reservoir is 2,877 feet long and was constructed from the natural lake to the intake structure of the dam's outlet works, approximately 1800 feet downstream and at a lower elevation than the original lake outlet. The intent of the lowered outlet works was to put all of the average annual runoff into service by adding an additional 76,000 acre feet of natural lake water. As a storage reservoir, Kachess Lake's active capacity is 239,000 acre⋅ft (295 million m3). The name Kachess comes from a Native American term meaning "more fish", in contrast to Keechelus Lake, whose name means "few fish".

Excerpt from the Wikipedia article Kachess Lake (License: CC BY-SA 3.0, Authors, Images).

Kachess Lake
Kachess River Road,

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Latitude Longitude
N 47.264166666667 ° E -121.20583333333 °
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Kachess River Road

Kachess River Road
98925
Washington, United States
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Kachess Lake (192351699)
Kachess Lake (192351699)
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