THE BLACK RIVER LAND BRIEF
Land in the
Beach Ridges and Sand Deltas setting.
Black River township has 24 square miles of land in Pennington County. Its Census reference point is in Beach Ridges and Sand Deltas, 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
Black River and Pennington County
Black River is associated with Pennington 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.
Black River by land and water
The Census records 0 square miles of water within Black River, or 0% of its total area. It is 0.3 percentage points lower than the 0.3% recorded for Pennington County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Black River township has 2 times the land area of nearby Browns Creek township (12 square miles). These areas describe boundaries, not comparable property prices.

