Yale Dam | |
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![]() Yale Dam, north side | |
Location | Clark / Cowlitz counties, Washington, USA |
Coordinates | 45°57′51″N 122°19′57″W / 45.96417°N 122.33250°W |
Status | Operational |
Opening date | 1953 |
Designed by | Ebasco Services Inc. |
Operator(s) | PacifiCorp[1] |
Dam and spillways | |
Type of dam | Embankment dam |
Impounds | Lewis River |
Height | 323 feet (98.5 m) |
Length | 1,500 feet (457 m)[2] |
Elevation at crest | 460 feet (140 m) |
Spillway type | Gated concrete ogee/chute |
Spillway length | 195 feet (59.4 m) |
Reservoir | |
Creates | Yale Lake |
Total capacity | 402,000 acre-feet (0.496 km3) |
Catchment area | 600 square miles (1,550 km2) |
Power Station | |
Hydraulic head | 240 square miles (622 km2) |
Turbines | 2 |
Installed capacity | 134,000 kW[3] |
Yale Dam is a 323-foot high earth-type hydroelectric dam on the Lewis River, in the U.S. state of Washington,[4] owned by PacifiCorp.[2] It is located on the border between Cowlitz County and Clark County. Its reservoir is called Yale Lake. The dam's power plant capacity is 134 megawatts.[3]
In January 2020, PacifiCorp, the dam owner, lowered the reservoir level 10 feet below normal operating level in order to reduce the probability of an accidental release due to an earthquake.[5]