Umatilla Rapids is a stretch of rapids in Benton County, Washington, in the Columbia Plateau region. It lies about 2.4 miles northeast of Umatilla and roughly 20.6 miles southwest of Kennewick as the crow flies.
The Columbia Plateau is a vast expanse of layered basalt flows covered by sagebrush steppe, grassland and dryland wheat. Waterfalls here drop over basalt cliffs in coulees and river canyons carved by ancient floods.
Benton County holds 3 recorded rapids, and several are close by. Canoe Encampment Rapids, a historical rapids rapid, is about 23.7 miles away.
Umatilla Rapids is located at 45.9365° N, 119.3015° W. The listing is based on the USGS Geographic Names Information System, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this rapid yet.