THE UMAPINE LAND BRIEF
Land in the
Pleistocene Lake Basins setting.
Umapine CDP has 3.32 square miles of land in Umatilla County. Its Census reference point is in Pleistocene Lake Basins, within Columbia Plateau.
Basalt underlies this dry plateau of grassland and sagebrush. Windblown soils cover some uplands, while ancient flood paths exposed rock across the region's scabland terrain.
Regional context: Columbia Plateau ↗ · Classification at the Census reference point
Umapine and Umatilla County
Umapine is associated with Umatilla 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.
Umapine by land and water
The Census records 0 square miles of water within Umapine, or 0% of its total area. It is 0.5 percentage points lower than the 0.5% recorded for Umatilla County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Umapine CDP has 1.6 times the land area of nearby Milton-Freewater city (2.03 square miles). These areas describe boundaries, not comparable property prices.

