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Lock & Dam 3

  • Located on Mississippi River mile 796.9 near Red Wing, Minn.
  • Constructed and placed in operation July 1938. Site underwent major rehabilitation from 1988 through 1991.
  • Dam consists of concrete 365' long with 4 roller gates. More than 2,000 feet of earth embankment with a series of upstream spot dikes.
  • Lock is 110 feet wide by 600 feet long.
  • Brochure


Lock and Dam 3 recently completed a $70 million renovation project that was funded by the American Recovery and Reinvestment Act. For more information, see:

Recreation Opportunities

Site has public observation platform and restrooms open from dawn until dusk each day from April to November.
Lock and Dam 3
Lock & Dam 3, Welch, Minn.

Contact information

U.S. Army Corps of Engineers
St. Paul District
Lock and Dam No. 3

4330 Lock & Dam Road
Welch, MN
55089-9644

(651) 388-5794