US Army Corps of Engineers
St. Paul District Website


Upper Mississippi River Restoration Program: Bass Ponds Marsh & Wetland Habitat Restoration

Published March 15, 2018
Updated: Sept. 19, 2019
LocationBass Ponds project overview

This study area is located within the Minnesota Valley National Wildlife Refuge in an urban floodplain area near the cities of Shakopee and Savage, Minnesota. The lake and marsh areas are south of the Minnesota River (river miles 15‒21) and include Blue Lake, Fisher Lake, Rice Lake and the adjacent Continental Grain Marsh.


The proposed project aims to improve habitat for aquatic vegetation and migratory waterfowl by providing water level management capabilities that target management goals of the refuge. The tentatively selected plan includes construction of six concrete stop log structures with associated rock-lined overflows, access dredging to the structures, and an earthen plug.


The U.S. Army Corps of Engineers began planning this project in fall 2017. The Corps completed a final feasibility study in May 2019. A construction contract award is expected in fall 2019.


The Corps has planned the Bass Ponds, Marsh, and Wetland Habitat Rehabilitation and Enhancement Project under the authority of the Upper Mississippi River Restoration Program. Congress authorized this program via Section 1103 of the Water Resources Development Act of 1986 and reauthorized it via Water Resources Development Act of 1999.

The Corps has been planning and designing the project as part of a cooperative effort with the U.S. Fish and Wildlife Service (USFWS), the Minnesota Department of Natural Resources and local interests.


Project design and construction costs will be 100 percent federal because the project is located on lands managed as a national wildlife refuge. Operation and maintenance costs will be 100 percent federal, a responsibility of the USFWS.

Estimated total project cost                     $5,800,000