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Start Over You searched for: Place Washington (D.C.) Remove constraint Place: Washington (D.C.) Subject Locks (Hydraulic engineering) Remove constraint Subject: Locks (Hydraulic engineering) 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.