The project is located in west-central Minnesota along an 11.4 mile stretch of channelized river. Breckenridge, Minnesota, is approximately 8.5 miles downstream of the project area and is the nearest town. The Lower Otter Tail River Channel Improvement Project was constructed in the 1950s to provide protection against the 10-year flood by clearing, enlarging, and straightening the existing river channel. The project reduced the length of the river in this reach from 18 miles to 11 miles. The straightened channel is now characterized by unstable banks, headcutting, excessive sediment loading, degraded in-stream and riparian habitats, and turbidity levels exceeding standard for aquatic life.
All Minnesota flood control sites include flood risk management, recreation and environmental stewardship business line functions. Each has public use facilities for shore fishing, picnicking, bird watching and other activities. The land is actively managed for habitat enhancement. Lake Traverse is on the Minnesota–South Dakota border between Browns Valley, Minnesota, and Wahpeton, North Dakota/Breckenridge, Minnesota. It consists of two dams, two reservoirs and the Browns Valley Dike.
The Flood Risk Management program minimizes flood damages and disruptions caused by recurring flooding of the Minnesota and Chippewa rivers. Montevideo is located in Chippewa County in western Minnesota, approximately 130 miles west of St. Paul, Minnesota. The city is at the confluence of the Chippewa and Minnesota rivers and is subject to flooding from both rivers.
The Lac qui Parle dike and emergency spillway is designed to retain the Lac qui Parle Reservoir during times of flood but is designed for overtopping during extreme events. The overtop elevation of the spillway is 940.75 feet. The Lac qui Parle Dam is located on the upper Minnesota River 30 miles east of the South Dakota border. The dam is about seven river miles upstream of Montevideo, Minnesota. The dike and emergency spillway is adjacent to and west of the dam between the dam and County Hwy 75. The damaged area of the spillway extends approximately 2,500 feet from the dam.
The purpose of this project is to modify the existing Marsh Lake Dam to increase the bio-diversity of the Minnesota River/Lac qui Parle/Pomme de Terre River ecosystem without compromising the flood risk management function of the Marsh Lake Dam. Marsh Lake is located on the Minnesota River between Swift and Lac qui Parle counties near Appleton, Minnesota. The U.S. Army Corps of Engineers owns and maintains Marsh Lake Dam as part of the Lac qui Parle Flood Risk Management project. The fixed-crest dam holds a conservation pool in the upper portion of the Lac qui Parle Reservoir.
The purpose of this study is to investigate the effectiveness of various flood risk reduction measures basin wide to reduce main stem peak flows by 20% for the larger rare events such as the 0.5% (200-year) and 0.2% (500-year) chance of exceedance floods.
The Yellow Medicine River is a major tributary to the Minnesota River located in southwestern Minnesota. The study area for this project includes approximately 685 square miles of mostly agricultural lands across five counties. The Yellow Medicine River and Minnesota River wetland project addresses three high priority concerns: (1) mitigate altered hydrology and minimize flooding; (2) minimize transport of excess nutrients, sediment and bacteria; and (3) preserve groundwater quantity and quality.
The Tribal Partnership Program (TPP) provides authority for the U.S. Army Corps of Engineers to utilize TPP to perform water-related planning activities and activities related to the study, design and construction of water resources development projects located primarily on tribal lands that substantially benefit federally-recognized tribes. To start the process, a tribe submits a study request to the U.S. Army Corps of Engineers. The Corps evaluates the request, and if viable, the Corps works with the tribe to determine a scope of work and enters into a feasibility cost sharing agreement (FCSA). Following the execution of the FCSA, the Corps seeks federal funding for the study.
The study will assess the problems and opportunities being faced by the Lower Sioux Indian Community on their tribal lands and make recommendations related to erosion along the Minnesota River adjacent to and impacting those lands. The Lower Sioux Indian Community is located south of the Minnesota River in Redwood County, approximately 2 miles south of the city of Morton, Minnesota.
The study will assess the problems and opportunities being faced by the Upper Sioux Community on their tribal lands and make recommendations related to erosion along the Minnesota River adjacent to and impacting those lands. The Upper Sioux Community is located south of the Minnesota River in Yellow Medicine County, approximately four miles south of the city of Granite Falls, Minnesota.