Projects & Studies
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Ambrough Slough Habitat Project, Pool 10, Wisconsin
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Aquatic Ecosystem Restoration: Section 206, Paint Creek Restoration, Waukon, Iowa
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Asian Carp Barrier System Upper Mississippi River
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Blackhawk Park Backwater Restoration Project , Victory, Wisconsin
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Bussey Lake Habitat Project, Guttenberg, Iowa
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Capoli Slough Habitat Project, Pool 9, Wisconsin
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Christine and Hickson Dams
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Cold Springs Habitat Project, Crawford County, Wis.
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Conway Lake Habitat Project, Lansing, Iowa
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Drayton Dam Habitat Restoration, Drayton, North Dakota
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Dresbach Island Revegetation Project
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East Channel Habitat Project, La Crescent, Minn./Wis.
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Endangered Species - Conservation of Native Mussels
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Environmental Infrastructure Assistance - City of Garrison and Kathio Township, Minnesota
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Environmental Infrastructure Assistance Program: Section 219 - Devils Lake and All of North Dakota
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Environmental Infrastructure Assistance Program: Section 219 at Central Lakes, Goodview, Grand Rapids, Willmar, Minnesota
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Environmental Infrastructure Assistance Program: St. Croix Falls, Wisconsin
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Fargo-Moorhead and Upstream Feasibility Study
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Feasibility Study: Blue Earth River Basin in Minnesota and Iowa
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Finger Lakes Habitat Project , Wabasha, Minnesota
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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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Grand Marais River Aquatic Ecosystem Restoration
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Guttenberg Waterfowl Ponds Habitat Project, Iowa
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Habitat Restoration: Mississippi River, Pool 8 Islands Phase III, Wisconsin/Minnesota
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Habitat Restoration: Mississippi River, Clear (Finger) Lake, Pool 5, Minnesota
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Harpers Slough Habitat Project, Pool 9, Iowa
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Hay Creek Aquatic Ecosystem Restoration - Roseau County, Minnesota
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Indian Slough Habitat Project, Buffalo County, Wis.
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Integrated Watershed Study: Minnesota River Basin in Minnesota, South Dakota, North Dakota and Iowa
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Island 116 Channel Closure & Shoreline Stabilization
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Island 42 Habitat Project, Wabasha County, Minn.
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Kinnickinnic River Aquatic Ecosystem Restoration
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Lake Onalaska Habitat Project, La Crosse, Wisconsin
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Lake Winneshiek Habitat Project, Ferryville, Wis.
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Lansing Big Lake Habitat Project, Lansing, Iowa
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Long Lake Habitat Project , Trempealeau, Wisconsin
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Long Meadow Lake Habitat Project, Bloomington, Minn.
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Lower St. Anthony Falls Rapids Restoration, Mississippi River, Minneapolis, Minn.
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Marsh Lake Ecosystem Restoration Feasibility Study, Lac Qui Parle Wildlife Area, MN
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McGregor Lake Habitat Project, Prairie du Chien, Wisconsin
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Minnehaha Creek Watershed Study
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Mississippi River Bank Stabilization Habitat Project, Minn/Wis/Iowa
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Mississippi River Locks and Dams Nos. 2-10 Embankment Rehabilitation
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Mississippi River Recreation and Environmental Stewardship, Eau Galle Dam
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Mississippi River: Lock & Dam 3 Navigation Safety and Embankments, Minnesota and Wisconsin
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Mud Lake Water Management
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North Ottawa Impoundment Project, Grant County, Minn.
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Orr, Minnesota Water Line Replacement - Section 569 Environmental Infrastructure Program
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Painter Creek Habitat Restoration, Minnehaha Creek, Minnesota
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Peterson Lake Habitat Project, Wabasha, Minnesota
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Pigs Eye Habitat Restoration Lake, St. Paul, Minnesota
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Polander Lake Habitat Project, Winona, Minnesota
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Pool 8 Islands Phase I Habitat Project, Wisconsin
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Pool 8 Islands Phase II Habitat Project, Stoddard, Wis.
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Pool 9 Island Habitat Project, Wisconsin
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Pool Slough Habitat Project, New Albin, Iowa
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Reconnaissance Report: Baraboo/Wisconsin River
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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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Red Lake River/Zah Gheeng Marsh Projects, Clearwater County, Minn.
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Red River of the North Basin: Basin-Wide Watershed Management Planning
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Red River of the North Basin: Minnesota, North Dakota, South Dakota and Manitoba, Reconnaissance Study
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Rice Lake Habitat Project, Savage, Minnesota
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River Resource Values and Expectation
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Ruffy Brook Aquatic Ecosystem Restoration, Clearwater County, Minnesota
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Sand Hill River Aquatic Ecosystem Restoration, Minn.
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Small Scale Drawdown Habitat Project, Buffalo City, Wis.
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South Washington Watershed District
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Spring Lake Islands Habitat Project, Buffalo City, Wis.
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Spring Lake Peninsula Habitat Project, Buffalo City, Wis.
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St. Croix Headwaters Watershed Study, Wisconsin
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St. Croix River: Endangered Mussel Conservation - Zebra Mussel Control
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St. Croix Watershed Reconnaissance Study
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Streambank Protection: Section 14 Minnehaha Creek WPA Walls, Minnesota
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Streambank Protection: Section 14, Barnes County, Kathryn, North Dakota
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Streambank Protection: Section 14, Pug Hole Lake, Minnesota
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Streambank Protection: Section 14, Sartell, Minnesota
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Sturgeon Lake, Pine County, Minnesota, Wastewater Collection and Treatement Facility
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Sunrise River Watershed Study, Minnesota
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Trempealeau National Wildlife Refuge, Trempealeau, Wis
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Upper Mississippi River - Illinois Waterway System Navigation Study
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Upper St. Croix Lake Sanitary District Wastewater Collection Systems Improvement Project
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WKTY-AM Study Area
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Western Flood Control Sites - Minnesota: Lake Traverse, Orwell Lake, Hwy 75 - Bigstone, Lac qui Parle
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Western Flood Control Sites – North Dakota: Lake Ashtabula, Homme Lake Souris River
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Wild Rice River (MN) Feasibility Study
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Wild Rice River Aquatic Ecosystem Restoration, Minn.
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Zebra Mussels and Management Implications for Endangered Freshwater Mussels on the Upper Mississippi River System
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Feasibility Study: Blue Earth River Basin in Minnesota and Iowa
Location/Description
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The Blue Earth River basin is located in south-central Minnesota and northern Iowa. The Blue Earth River joins the Minnesota River near Mankato, Minnesota.
The Blue Earth River ecosystem has been degraded by land use changes in the watershed that have altered the hydrologic and sediment transport regimes. Extensive artificial drainage made up of public and private ditch and tile systems facilitates the movement of water throughout the watershed. Approximately 86 percent of wetlands once present in the watershed have been lost through drainage. Predominant land use within the watershed is agricultural. Much of the land in the watershed is highly erodible, and the intensive agricultural land use and steep slopes in the lower reaches of the watershed result in considerable bank erosion along stream channels and high suspended sediment concentrations in the river. The Blue Earth River is a major contributor of sediment and nutrients to the Minnesota River.
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The Rapidan Dam is located on the Blue Earth River approximately 12 miles upstream of Mankato. The dam, built in 1910, supports hydroelectric power generation, but it also blocks fish passage between the Minnesota River and the 1,200 miles of perennial tributary streams above the dam. In 2002, extensive undermining of the dam’s foundation was discovered, and emergency repairs were required to prevent a dam failure. Additional apron and abutment repairs have been conducted since 2002.
The feasibility study is evaluating measures to restore habitat in the Blue Earth River basin and reconnect it to the main stem Minnesota River ecosystem. The initial study efforts were intended to determine the existing foundation conditions and the potential causes of the undermining that occurred prior to 2002 to assess the advisability of removing the dam.
Feasibility study costs are shared 50/50 between the Corps and the non-Federal sponsor, Blue Earth County.
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Status
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The feasibility cost share agreement was executed on October 5, 2007. Initial feasibility study tasks are underway, including geotechnical investigations and hydraulic analyses at Rapidan Dam.
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Authority
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The study is authorized by a resolution of the Committee on Public Works of the U.S. House of Representatives, May 10, 1962, to determine the advisability of further improvements in the Minnesota River basin for navigation, flood control, recreation, low-flow augmentation, and other related water and land resources.
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Fiscal
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Federal cost $855,000
Non-federal cost $855,000
Total estimated cost $1,710,000
Fiscal year 2006 Federal funds: $ 79,000
Fiscal year 2007 Federal funds: $ 35,000
Fiscal year 2008 Federal funds: $ 98,000
Total available Federal funds: $ 212,000
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[Printable Copy]
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