National Geographic : 1945 Nov
U.B.Corps orEngineers, Official This Giant Spillway Discharges Surplus Water from the Vast Fort PeckReservoir The damlike structure in left center is a series of enormous floodgates, which are raised or lowered to control the volume ofescaping water. Aroadway runs along its top. To dig the stupendous, concrete-lined mile-long spillway, more than 14,000,000 cubic yards of earth were excavated. Inbackground isthewinding Missouri River, with cleared bottom land seen as strips (page 583).