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A device for winding cable at the gaging station in Yuma, Arizona on the Colorado River.
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The rock formations from which Needles, California received its name, three miles above Mellen, Arizona on the Colorado River.
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A dredge at work on Farmers Canal on the Colorado River.
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The potential site of the Boulder Canyon Dam on the Colorado River.
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An unidentified man standing in a field of grain in Yuma, Arizona.
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The site of the proposed Bulls Head Dam on the Colorado River.
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A possible dam site for the Imperial Dam at Canebrake Canyon on the Colorado River, near the site of the mining town of Picacho, California, which is now beneath the Imperial Reservoir.
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The ruins of the St. Francis Dam after its collapse with the Santa Clara River in the foreground.
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Erosion of govenment lands below "The Narrows" of the Muddy River in Nevada.
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Down stream from the west abutment of the potential site for a dam (possibly Laguna Dam) above the now-abandoned Potholes placer-mining area in Imperial County, California.
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Looking across the Walapai (Hualapai) rapids on the Colorado River.
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A headgate covered in sand on the Tulip Canal of the Imperial Canal system.
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Shallow rapids on the Colorado River near Las Vegas Wash.
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A large rock formation on the Colorado River at Giers Basin, Arizona.
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The Spies Canal levee near the site of the Laguna Dam.
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A potential dam site (possibly for the Parker Dam) near the Bill Williams Fork on the Colorado River.
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An unidentified man standing next to group of mesquite trees in the bottom lands between Needles, California and Fort Mojave, Arizona.
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An unidentified man standing next to a small structure at Yuma, Arizona on the Colorado River.
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The Ludy Canal near the Colorado River.
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The entrance of Boulder Canyon on the Colorado River.
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A crew erecting a dike at the third heading of the Imperial Canal in Mexico.
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