Previously Proposed Project
As previously proposed by the Diversion Authority, the Fargo-Moorhead flood diversion project design included:
- a 30-mile long diversion channel,
- a 6-mile long connecting channel,
- 12 miles of tie-back embankments,
- 4 miles of overflow embankment, and
- levee/ floodwall features in Fargo, North Dakota and Moorhead, Minnesota.
When in operation, the project staging area would store flood waters on about 33,000 acres within a 38,400 acre area, in order to avoid increases in downstream flooding. Flows would be controlled via two dams, one on the Red River and one on the Wild Rice River:
- The Wild Rice River dam would be located in North Dakota and not subject to Minnesota permit requirements.
- The DNR has determined that the proposed dam on the Red River would be classified as a Class I Dam under the State's Dam Safety permitting rules (MN Rules part 6115.0340). Therefore, the DNR must produce an Environmental Impact Statement (EIS) for the proposed project, as required by MN Rules part 4410.4400, subpart 18. The dam would need a DNR Dam Safety permit prior to construction.
Plan B Project
The Plan B Project changes the alignments of the southern embankment alignment, the eastern tieback and the western tieback. The Plan B Project also allows more flows through town. These component changes result in a new inundation and staging area, and also result in modifications to, and elimination of, some project structures, such as the Comstock Ring Levee.