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Lock & Dam 1

  • Located on Mississippi River mile 847.9, in Minneapolis.
  • Construction completed in 1917, reconstructed in 1929. Main Lock completed May 1932. Last major rehabilitation 1978-1983.
  • Dam consists of Ambursen concrete overflow structure 574' long, hydro power station owned and operated by Brookfield Power Co.
  • Lock is 56' wide by 400' long. River Lock 56' wide by 400' long.
  • It is the only twin lock in the district.
  • Brochure

2013 lockage service hours

Lock & Dam 1

3 a.m. to 10 p.m.

 

Recreation Opportunities

Observation deck is closed until Spring 2014

Site has public observation deck and comfort station open from dawn to dusk each day from April to November.

Lock and Dam 1
Lock & Dam 1, Minneapolis, Minn.

Contact information

U.S. Army Corps of Engineers
St. Paul District
Lock and Dam 1

5000 West River Parkway
Minneapolis, MN 55417-1609
(651) 290-5919

iWatch link