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BOULDER DAM Boulder Canyon Project ArizonaCaliforniaNevada
GRAND COULEE DAM Columbia Basin Project Washington
ROOSEVELT DAM Salt River Project Arizona
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50 feet acre-feet aggregate All-American Canal arch arch dam Arrowrock Dam basin borrow pit Boulder Dam BUREAU OF RECLAMATION buttress cableway canal cantilever cement centers channel cofferdam completed construction contraction joints cooling cost crest cubic yards cut-off trench deflections depth designed diameter discharge diversion tunnel downstream face drainage drilled dumped earth elevation embankment emergency gates Engineering excavation feet long feet wide flow foundation gallery gate chamber Grand Coulee Grand Coulee Dam gravel gravity grout grout holes hoist horizontal hydraulic Imperial Dam Installing and painting irrigation located lower material maximum miles mixer mixing plant needle valves operation outlet Owyhee Owyhee Dam penstock pipe placed pounds per square pressure pump radial reservoir reservoir water riprap river rock fill roller sand second-feet shaft side slope sluiceway spillway square inch steel storage stresses temperature tests thickness tion trashrack trial load upstream face vertical water surface