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This undated photo provided by the Grant County Public Utility District shows workers put the finishing touches on an 18-foot extension of the fish ladder at the cracked Wanapum Dam near Beverly, Wash. The new flume allows fish to pass through the dam and into the reservoir behind without suffering a potentially fatal large drop into the water. A crack discovered in the dam in February 2014 required that the reservoir be lowered behind the dam, threatening salmon runs. (AP Photo/Grant County Public Utility District )

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