THE ROSEDALE LAND BRIEF
Land in the
Lake Agassiz Plains setting.
Rosedale township has 35.1 square miles of land in Mahnomen County. Its Census reference point is in Lake Agassiz Plains, within Lake Agassiz Plain.
The former bed of glacial Lake Agassiz forms an exceptionally flat plain in the Red River valley. Thick lake sediments overlie older glacial deposits across this historic prairie landscape.
Regional context: Lake Agassiz Plain ↗ · Classification at the Census reference point
Rosedale and Mahnomen County
Rosedale is associated with Mahnomen County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Rosedale by land and water
The Census records 1.17 square miles of water within Rosedale, or 3.2% of its total area. It is 1.1 percentage points lower than the 4.3% recorded for Mahnomen County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Rosedale township has 161.1 times the land area of nearby Riverland CDP (0.22 square miles). These areas describe boundaries, not comparable property prices.

