Dredging and surveying to maintain the Mississippi River navigation channel
The crew of Launch 23, one of two hydrographic survey boats used by the St. Paul District to support dredging operations, conducts a post-dredge survey near Read’s Landing, Minn., on May 31. The survey – to verify that the 9-foot navigation channel is maintained – took place shortly after the Dredge Goetz removed an estimated 60,000 cubic yards (the survey will verify the exact amount) of dredged material from the navigation channel during its one-week mission here. The dredge – one of five dredging operations working on the Upper Mississippi River from St. Paul to Guttenberg, Iowa – will next move a few miles downstream as the district works to keep the navigation channel open for commercial tows, a high priority task given the amount of sediment moved into the channel due to spring flooding.

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