Flood Control

The Mouse River Enhanced Flood Protection Project is underway. The first three phases began in March. 

Phase MI-1 4th Avenue

The 4th Avenue North Floodwall phase of the project is located between just west of Broadway and just east of Third Street NE. This phase features floodwalls, earthen levees, a large pump station and other key features.

The project includes approximately 2,250 feet of floodwalls, earthen levees on both sides of the Broadway Bridge on the north side of the river, and removable closure structures.

The 4th Avenue Floodwall (Phase 1) has been under construction since the spring of 2018. Construction is expected to be completed in two to three seasons.

View the time-lapse of Phase MI-1

Phase MI-2 Napa Valley

The Napa Valley segment of the project begins at the west edge of Minot at the Highway 83 Bypass and ends at 16th Street Southwest across the Mouse River from the Minot Water Treatment Plant, on the north side of the Mouse River. The features through this segment of the project are predominantly earthen levees with an average height of approximately 14 feet. The existing levees through this stretch have an average height of approximately 7 feet. The Napa Valley segment includes a transportation closure structure at 16th Street Southwest which will consist of a removable barrier floodwall that is erected only during large flood events. The roadway will remain open to traffic during normal periods. The Napa Valley segment of the project will also include a storm water pump station in the vicinity of 7th Avenue and 20th Street Southwest, approximately 2 blocks south of Perkett School.

The Napa Valley levee will impact the Souris Valley and Wee Links Golf Courses. Impacts to these courses will be mitigated by modifying the course layout and moving or reconstructing the features that are impacted. The Dakota Bark Park, located on the west end of the project, will also be impacted by the new levee. The impacts will be mitigated to this park by reconfiguring the existing fences and shelter in locations close to the existing park.

The access to Wee Links will change due to the project. The new access will be off of 16th Street in the vicinity of Forest Road. The new access and parking lot for Wee Links will also serve area fishermen, as the existing fishing pier near the Minot Water Treatment Plant will be relocated to the north side of the river, adjacent to the new Wee Links parking lot.

Construction began in the spring of 2018 and will likely take two construction seasons to complete.

Phase MI-3 Forest Road

The Forest Road phase of the project includes segments on the north side of the river. This segment begins at the east end of the Napa Valley segment, at 16th Street Southwest, and ends at the end of 3rd Avenue Southwest, near the intersection of the Canadian Pacific Railroad tracks and the Mouse River.

The predominant features for the Forest Road segment of the project are dirt levees.

The Forest Road (Phase 3) project has been under construction since 2018 and will likely take two construction seasons to complete.

Why We Need Flood Control

On June 25, 2011, the Mouse River flowed under Minot’s Broadway Bridge at a record rate of 27,400 cubic feet per second (cfs) – more than five times the rate that existing channels and levees had been designed for. Not since 1882 had flows in excess of 20,000 cfs been seen.  For weeks during the 2011 flood, water levels were too high for passenger and emergency vehicles to safely cross numerous area bridges. After flood waters receded, many bridges remained out of service for months while damages were assessed and repaired.

The record-breaking flow overwhelmed most flood fighting efforts along the entire reach of the Mouse River, causing extensive damages to homes, businesses, public facilities, infrastructure, farms and ranches. According to the U.S. Army Corps of Engineers (USACE), 4,700 residential, commercial and public structures in Renville, Ward and McHenry Counties sustained building and content damages totaling more than $690 million. If emergency flood fighting measures had not been implemented, structure damages would have totaled roughly $900 million. Infrastructure damages totaled hundreds of millions of dollars in the city of Minot alone.  


The rural reaches of the Mouse River valley in North Dakota have endured frequent flood damages over the past two decades. Flooding has had significant impacts on the rural residents who make their livelihood along the river. Impacts from flooding in the rural areas are varied and widespread, including crop and hay losses, damage to structures, impacts to livestock, and loss of commerce due to inundated roads and bridges.

The City of Minot broke ground on the first three phases of Flood Control in the spring of 2017.

For more on the flood control projects visit the Mouse River Flood Protection Plan Website