Purpose
The sedimentation of backwater areas of the Upper Mississippi River is an ongoing issue. The project area is greatly influenced by the input of sand from the Chippewa River, entering Pool 4 at approximately river mile 764. Other potential sources of sand are the historic channel maintenance dredging side-cast islands and the four active temporary placement sites within the study area. Big Lake has lost much of its island complex and bottomland forest to wind and wave erosion. The barrier islands between the lake and Catfish Slough have been degraded and/or eliminated over the past several years.
Location
The project area in lower Pool 4 consists of open backwater, meandered side channels, main channel border, and island formations in the Mississippi River. The site is in the Upper Mississippi River National Wildlife and Fish Refuge near Wabasha, Minnesota. Sedimentation of the backwaters is an ongoing issue in this study area.
Description
The proposed project goal is to maintain, enhance, and create habitat suitable for native and desirable aquatic and terrestrial plants and animals. The project seeks to protect, enhance, restore, or create naturally regenerating, resilient, and diverse bottomland forest that will benefit migratory and resident birds and other species. The project seeks the same for backwater and flowing channel habitats that provide flow conditions and sediment dynamics that will benefit native fish (including migratory species) and mussel populations. Finally, the project seeks the same for submerged, emergent, and rooted floating leaved vegetation.
Status
Project planning began in the fiscal year 2022 as part of a cooperative effort of the U.S. Army Corps of Engineers (USACE), U.S. Fish and Wildlife Service, the Wisconsin and Minnesota Departments of Natural Resources, and local interests. A public meeting was held in Wabasha, Minnesota, in August 2022. USACE identified a Tentatively Selected Plan in July 2023 and held a public meeting on the draft report in Wabasha, Minnesota, in November 2023. USACE completed the final report in May 2024 and signed the Finding of No Significant Impact in June 2024. Plans and specifications for Stage 1 are anticipated in 2026, with a contract award anticipated in fiscal year 2027 subject to appropriations.
Authority
Congress originally authorized the Upper Mississippi River Restoration Program in Section 1103 of the Water Resources Development Act (WRDA) of 1986, Public Law 99-662 (codified as amended in 33 U.S. Code 652). Section 8345 of WRDA 2022, Public Law 117-263, increased the authorized program funding to a combined $90 million annually.
Funding
Project design and construction will be 100% federally funded because the project is located on lands managed as a national wildlife refuge. Operations and maintenance costs will be 100% federally funded and a responsibility of the U.S. Fish and Wildlife Service.
Federal funds allocated to date $1,449,000