Lock and Dam 1
Early in the morning of April 2, 2015, Aggregate Industries' MV Patrick Gannaway pushes two barges loaded with sand and gravel into the lock chamber at Lock and Dam 1, located adjacent to Minnehaha Park in Minneapolis.

Contact Public Affairs

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