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Harney Peak Lookout Tower, ...

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Pistol Creek Dam and Mill Race

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Calderwood Dam

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Lake Okmulgee Dam Spillway ...

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Lake Overholser Dam

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Pensacola Dam

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Fullerton Dam

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Lock No. 30 and Feeder Dam

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Walnut Canyon Dam

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Ash Fork Steel Dam

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Wilson Dam

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Ashland Gristmill and Dam

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Elephant Butte Dam

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Percha Diversion Dam

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Eagle Nest Dam

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Grand Valley Diversion Dam

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Old Mission Dam

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Sacaton Dam Bridge

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Coolidge Dam

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Theodore Roosevelt Dam Nati...