en Yale Dam

Yale Dam
Yale Dam
	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
Dam and spillways
Type of dam	Embankment dam
Impounds	Lewis River
Height	323 feet (98.5 m)
Length	1,500 feet (457 m)
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

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]

References

^ "Dam Name: Yale". npdp.stanford.edu. Archived from the original on 16 July 2011.
^ ^a ^b "Dam Name: Yale". npdp.stanford.edu. Archived from the original on 10 May 2022. Retrieved 10 May 2022.
^ ^a ^b "Yale Hydroelectric Project, FERC Project No. P-2071, Application for License Amendment, Volume I of V" (PDF). pacificorp.com. July 2020. Archived (PDF) from the original on 21 January 2022. Retrieved 10 May 2022.
^ Johnson, Noel. "Yale Dam - Recreation". lewisriver.com. Archived from the original on 1 August 2010. Retrieved 5 July 2010.
^ Fairbanks, Katie (16 Jan 2020). "PacifiCorp to lower Yale Reservoir because of earthquake risk". The Columbian. Archived from the original on 17 January 2020. Retrieved 10 May 2022.