Lock and Dam 5A dewatering
Jordon Johnson, operations, operates a jackhammer to remove damaged concrete on Lock and Dam 5A's lock chamber walls on January 15, 2015. Lock 5A was closed to navigation on Dec. 1, 2014, in order to complete the necessary work by March 9, 2015.

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U.S. Army Corps of Engineers
St. Paul District
Public Affairs Office
332 Minnesota St., Suite E1500
St. Paul, MN 55101

Phone: (651) 290-5807
Fax: (651) 290-5752