Withrow Moraine and Jameson Lake Drumlin Field

Withrow Moraine and Jameson Lake Drumlin Field comprise glacially-shaped ridges and hills spread across the Waterville Plateau in the Columbia Plateau region. The landforms include elongated drumlins and a terminal moraine ridge created by ancient ice sheet activity.

During the Pleistocene epoch millions of years ago, massive glaciers swept across the region and carved the landscape with tremendous force. When the ice retreated, it left behind the distinctive ridges and drumlin formations visible today.

The geological formations at this site provide essential educational opportunities for researchers and students studying Ice Age glacial processes and landform development.

This location sits on private land, so you will need to secure permission from the owner before visiting. Check access conditions and requirements before planning your trip to the area.

This location holds the only Ice Age terminal moraine found on the Waterville Plateau, an exceptionally rare formation for the region. The moraine marks where the ancient glacier reached its furthest advance before retreating.

Location: Washington

GPS coordinates: 47.68750,-119.62500

Latest update: December 8, 2025 19:49