| Projects & Studies
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General Investigations: FERC Licensing
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Dam Bridge and Gate Painting: Upper St. Anthony Falls through Lock and Dam 10
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East Two Rivers at Tower, Minnesota
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Effects of Recreational Boating on the Upper Mississippi River System
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Hydropower, Crown Hydro, Minneapolis, Minnesota
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Hydropower, Ford Plant, Minneapolis, Minnesota
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Hydropower, Lock and Dam 2, Hastings, Minnesota
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Hydropower, Lower St. Anthony Falls Hydro, Minneapolis
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Hydropower, Upper St. Anthony Falls, Minneapolis
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Integrated Watershed Study: Minnesota River Basin in Minnesota, South Dakota, North Dakota and Iowa
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Lock & Dam 10 Stage 2
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Lock Tow Haulage Units
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Lock and Dam 4 Embankment Environmental Assessment
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Locks and Dams 2 - 10, Embankment Maintenance Study
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Lower Pool 4 Channel and Dredged Material Management Study
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McMillan Island, Mississippi River Channel Maintenance
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Minnesota River Navigation Project
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Mississippi Headwaters Reservoirs Dam Safety Issues
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Mississippi Headwaters Reservoirs Project Sites
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Mississippi River Locks and Dams Nos. 2-10 Embankment Rehabilitation
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Mississippi River Major Maintenance / Rehabilitation
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Mississippi River: Lock & Dam 3 Navigation Safety and Embankments, Minnesota and Wisconsin
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Navigation and Environmental Sustainability Program (NESP)
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Navigation, Mississippi River, Lock Bulkheads and Slot Installation (Minnesota/Wisconsin/Iowa)
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Navigation: Mississippi River Project – American Recovery and Reinvestment Act Funded Projects, Minnesota/Wisconsin/Iowa
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Operation and Maintenance, Lock and Dam 10 Stage 2
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Reconnaissance Study: Minnesota River Basin in MN, SD, IA and ND
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Recreational Boating Study of the Mississippi River, Pools 4 to 9, Summer 2003
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River Resource Values and Expectation
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Small-Boat Harbor Dredging, St. Paul, Minnesota (Harbor Dredging)
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St. Croix River: Endangered Mussel Conservation - Zebra Mussel Control
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Upper Mississippi River - Illinois Waterway System Navigation Study
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Upper Mississippi River 9-Foot Project - Locks & Dams
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Upper Mississippi River 9-Foot Project Channel Maintenance; Minnesota, Wisconsin, Iowa
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Warroad Harbor and River Harbor Dredging
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Lock and Dam 1
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Overview
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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.
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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 deck and comfort station open from dawn to dusk each day from April to November.
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For more information
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Duane Putz
Telephone: (612) 724-2971,
Mailing Address:
US Army Corps of Engineers
5000 West River Parkway
Minneapolis, MN 55417
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[Printable Copy]
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Press Room