Yale Dam

Dam in Washington, USA

45°57′51″N 122°19′57″W / 45.96417°N 122.33250°W / 45.96417; -122.33250StatusOperationalOpening date1953Designed byEbasco Services Inc.Operator(s)PacifiCorp^[1]Dam and spillwaysType of damEmbankment damImpoundsLewis RiverHeight323 feet (98.5 m)Length1,500 feet (457 m)^[2]Elevation at crest460 feet (140 m)Spillway typeGated concrete ogee/chuteSpillway length195 feet (59.4 m)ReservoirCreatesYale LakeTotal capacity402,000 acre-feet (0.496 km³)Catchment area600 square miles (1,550 km²)Power StationHydraulic head240 square miles (622 km²)Turbines2Installed capacity134,000 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]

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.