Flood Risk Management
Continuing Authorities Program (CAP)
Upper Mississippi River Restoration Program (UMRR)
Red River of the North
Iowa - 1
Iowa - 4
Minnesota - 1
Minnesota - 2
Minnesota - 3
Minnesota - 4
Minnesota - 5
Minnesota - 6
Minnesota - 7
Minnesota - 8
Wisconsin - 2
Wisconsin - 3
Wisconsin - 6
Wisconsin - 7
U.S. Army Corps of Engineers
St. Paul District
Programs & Project Management
180 5th St. E., Suite 700
St. Paul MN 55101
These non-structural embankment repair projects at Locks and Dams 2 through 10 will address restoring embankments to meet current design standards. Most dam embankments are currently protected from the erosive forces of water by a layer of riprap placed along the embankment’s length. When the riprap eventually erodes, the embankment itself will erode if more protection is not added.
The U.S. Army Corps of Engineers has designed and placed berms and small islands to assist in reducing wave action and wind fetch within pools created by the locks and dams. Reducing these forces increases the longevity of the embankment protections. An example of this repair is the embankment at Lock and Dam 4 (photo above), where the Corps placed beneficial dredge material to create a berm for terrestrial habitat.
No increase in the height of the embankments is planned.
For the programmatic review of the non-structural embankments adjacent to structures, the Corps prepared a draft problem appraisal report (PAR). The PAR has three goals:
After the PAR, the Corps completes feasibility reports with integrated environmental assessments for individual projects identified during the PAR.
The Corps initiated the first feasibility report at Lock and Dam 2 in fiscal year 2017 and will complete the report in fiscal year 2020. Plans, specifications and a contract award for a protective island upstream of Lock and Dam 2 will be completed in fiscal year 2020.
Additional non-structural embankment repair at the other locks and dams will continue in future fiscal years.
Congress authorized the Upper Mississippi River 9-Foot Channel Navigation Project as part of the River and Harbor Act approved July 3, 1930.
Embankment rehabilitation work at the locks and dams is funded completely by the federal government.
Costs through fiscal year 2019 $500,000