-'''Yale Dam''' is a 323-foot high earth-type [[Hydroelectricity|hydroelectric]] [[dam]] on the [[Lewis River (Washington)|Lewis River]], in the [[U.S. state]] of [[Washington (U.S. state)|Washington]],<ref>"Yale Dam - Recreation - LewisRiver.com." LewisRiver.com. N.p., n.d. Web. 5 July 2010. <http://lewisriver.com/yale.html></ref> owned by [[PacifiCorp]]. It is located on the border between [[Cowlitz County, Washington|Cowlitz County]] and [[Clark County, Washington|Clark County]]. Its reservoir is called [[Yale Lake]]. The dam's power plant generates 134 megawatts.
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+'''Yale Dam''' is a 323-foot high earth-type [[Hydroelectricity|hydroelectric]] [[dam]] on the [[Lewis River (Washington)|Lewis River]], in the [[U.S. state]] of [[Washington (U.S. state)|Washington]],<ref name="lr_2010_yaledam"/> owned by [[PacifiCorp]]<ref name="npdp_20220510_yaledam"/>. It is located on the border between [[Cowlitz County, Washington|Cowlitz County]] and [[Clark County, Washington|Clark County]]. Its reservoir is called [[Yale Lake]]. The dam's power plant generates 134 megawatts.
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+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.<ref name="tc_20200116_reservoirlowered"/>