26 Feb 2015

Dredged Material Management Plans - Upper Mississippi River

The U.S. Army Corps of Engineers, St. Paul District is responsible for maintaining 244 miles of the Upper Mississippi River 9-foot channel navigation system from the head of navigation at Minneapolis, Minnesota, at river mile 857.6 to Guttenberg, Iowa at river mile 614.0. The navigation system also includes the lower navigable portions of the Minnesota, St. Croix, and Black Rivers. Long term planning for dredged material placement has been ongoing since the mid-1970’s, starting with the GREAT (Great River Environmental Action Team) study from 1974 -1980 and is actively managed to maximize beneficial use of the material.

24 Apr 2024

Navigation: Pool 3 and Upper Pool 4 Dredged Material Management Plan – Dakota and Washington and Goodhue County, Minnesota, and Pierce County, Wisconsin

The U.S. Army Corps of Engineers operates and maintains the Upper Mississippi River 9-Foot Channel Navigation Project, and one method the Corps uses to keep the channel the right size is dredging river soils or “material.” The purpose of the DMMP is to prepare a coordinated, long-term plan for managing dredged material in Pool 3 and Upper Pool 4. This plan was initiated due to needs for dredged material management upland placement sites.

17 Mar 2021

Pool 10 Dredged Material Management Plan – Allamakee & Clayton County, Iowa, and Crawford & Grant County, Wisconsin

The Pool 10 Dredged Material Management Plan (DMMP) study area is located between Lock and Dam 9 near Lynxville, Wisconsin, and Lock and Dam 10 at Guttenberg, Iowa, spanning nearly 33 river miles from 615.1 to 648.0. The study area includes several communities near the main navigation channel including Prairie du Chien, Wisconsin, and Guttenberg, Iowa.