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The Third Powerhouse
[edit]During the late 1960's and early 1970's Grand Coulee Dam was expanded to include a new group of generators, commonly known as the Third Powerhouse. During the spring months of this period of construction Lake Roosevelt was drastically lowered (referred to as a drawdown). The largest of these drawdowns occurred during the spring of 1969 and partially exposed Kettle Falls. In addition to exposing the falls this also allowed the Lake Roosevelt National Recreation Area and the United States Bureau of Reclamation to undergo a major archaeological salvage program of native american and historical sites previously flooded by Lake Roosevelt.[1]
- ^ Currents and Undercurrents:, An Administrative History of Lake Roosevelt National Recreation Area.