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Start Over You searched for: Subject Locks (Hydraulic engineering) Remove constraint Subject: Locks (Hydraulic engineering) Theme Inland Waters Remove constraint Theme: Inland Waters Creator Institute for Water Resources (U.S.). Navigation Data Center Remove constraint Creator: Institute for Water Resources (U.S.). Navigation Data Center

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2013. Institute for Water Resources (U.S.). Navigation Data Center. This point shapefile contains the locations of waterways locks in the United States. The Navigation Data Center had several objectives in developin... United States. Bureau of Transportation Statistics.