09020107 (MN/ND) Elm-Marsh

The Elm-Marsh 8-Digit Hydrologic Unit Code (HUC) subbasin is part of the Red River Basin in northwestern Minnesota and eastern North Dakota. The watershed encompasses the Glacial Lake Agassiz Basin, Drift Plains, Sand Deltas and Beach Ridges, and Lake Agassiz Plains portions of the Glacial Lake Agassiz Plain Ecoregion.

The Red River has a poorly defined floodplain and low gradient that combine with extensive drainage, widespread conversion of tallgrass prairie to farmland, and urban/suburban development to leave the basin subject to frequent floods that affect urban and rural infrastructure and agricultural production.

The main resource concerns in the watershed are wind and water erosion, nutrient management, wetland management, surface water quality, flood damage reduction, and wildlife habitat. Many of the resource concerns relate directly to flooding and increased sediment and pollutant loadings
to surface waters.