Projects & Studies
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Critical Infrastructure Security Program (CISP)
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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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General Investigations: Federal Energy Regulatory Commission(FERC) Licensing
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General Investigations: Hydropower, Crown Hydro, Minneapolis, Minnesota
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General Investigations: Hydropower, Ford Plant, Minneapolis, Minnesota
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Hydropower, LSAF Hydro, Minneapolis, Minnesota
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Hydropower, Lock and Dam 2, Hastings, Minnesota
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Hydropower, Upper St. Anthony Falls, Minneapolis, Minnesota
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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, Minn/Wisc/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; MN, WI, IA
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Warroad Harbor and River Harbor Dredging
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Mississippi River: Lock & Dam 3 Navigation Safety and Embankments, Minnesota and Wisconsin
Location/Description
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Lock and Dam 3 is a navigation dam and lock on the Mississippi River 6 miles upstream from Red Wing, Minn. Its position on a bend in the river makes downbound navigation difficult because of an outdraft current that tends to sweep towboats and barges away from the lock toward the gated part of the dam. The outdraft current has resulted in many accidents, including 11 incidents since 1968 when tows collided with the gated part of the dam. A related problem is with the low and weak embankments on the Wisconsin side.
Navigation accidents can render the four roller gates inoperable, resulting in overtopping and erosion of the embankments. The three Wisconsin side embankments divide the 8-foot head at the dam into three steps and work together as part of Lock and Dam 3. Failure of the embankment system could result in accidental drawdown of Pool 3 with significant economic and environmental consequences.
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Status
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A Record of Decision was signed on April 3, 2007, and endorsed by Corps' Headquarters, which approved a project to address the navigation safety problem and strengthen the embankments. The Office of Management and Budget made a positive determination of budgetability on May 5, 2008.
The recommended plan includes strengthening the Wisconsin embankments and constructing an extended landward guide wall with channel modifications to improve navigation safety.
The district is progressing with designs on all features and is developing plans and specifications for the initial stage of construction on the embankments. Construction of the spot dikes on the upstream portion of the project is scheduled to begin in fiscal year 2010.
Environmental mitigation is required to restore 313 acres to floodplain forest. Acquisition of real estate is ongoing, and approximately 110 acres of eligible land has been purchased.
Construction of the spot dikes on the upstream portion of the project is scheduled to begin in fiscal year 2010.
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Authority
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The Upper Mississippi River Nine-Foot Channel Navigation Project was authorized as part of the Rivers and Harbors Act approved July 3, 1930.
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Fiscal
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Total project construction cost is estimated to be $78.6 million. The estimated benefit-cost ratio is 1.4.
Allocation History – The total allocation through fiscal year 2008 reflects a 50/50 contribution from the Corps' Construction, General (CG), appropriation and the Inland Waterways Trust Fund. Status of the IWTF is available at:
http://www.iwr.usace.army.mil/usersboard/StatusofTrustFund.htm
| CG Funds | IWTF | CG & IWTF |
Fiscal year 1998-2008 | $3,702 | $3,702 | $7,404 |
The remaining cost to complete is $82.9 million.
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[Printable Copy]
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