Located on Mississippi River mile 702.5 near LaCrescent, Minn.Constructed and placed in operation in April, 1937. Site underwent major rehabilitation from 1989 through 2002.Dam consists of concrete structure 940 feet long, five roller gates and 11 tainter gates. Two segments of earth embankment 8,100 feet long from dam to French Island. One concrete spillway 1,000 feet long. And 2,400 feet long from French Island to Onalaska Wis. The a concrete spillway is 670 feet long.Lock is 110 feet wide by 600 feet long.
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Current year hydrological data
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Information such as pool elevation, tailwater elevation and discharge.
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Recreational Opportunities
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Site has public observation platform and restrooms open from dawn until dusk each day from April through mid-October.
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For more information
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Delene Moser
Telephone: (507) 895-2170
Mailing Address:
US Army Corps of Engineers
Rte 2 Box 51
La Crescent, MN 55947-9502
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Construction Photos
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Driving permanent wood and steel piling. May 31, 1934
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Concrete terstle and form construction work. June 18, 1934.
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Lincoln Dayton Crane. Jan. 25, 1936.
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General view of Cofferdam 1. Feb. 25, 1936.
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Press Room