Lock & Dam 7

  • Located on Mississippi River mile 702.5 near LaCrescent, Minnesota.
  • Constructed and placed in operation in 1935. The site underwent major rehabilitation from 1989 through 2002.
  • Dam consists of concrete structure 940 feet long, five roller gates and 11 Tainter gates. 
  • Lock is 110 feet wide by 600 feet long.
  • Brochure

Recreation Opportunities

The observation deck is currently OPEN.

Lock and Dam 7
Lock and Dam 7, La Crescent, Minn.

Contact Information

U.S. Army Corps of Engineers
St. Paul District
Lock and Dam No. 7

33018 Highway 61
La Crescent, MN 55947-9502

(507) 895-2170