Monaghan Rapids is a stretch of rapids in Okanogan County, Washington, in the Columbia Plateau region. It lies about 7.2 miles north of Coulee Dam and roughly 78.7 miles west of Spokane 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.
Okanogan County holds 8 recorded rapids, and several are close by. Equilibrium Rapids, is about 1.8 miles away. Nespelem Rapids, is about 3.9 miles away. Mah-kin Rapids, is about 9.9 miles away.
Monaghan Rapids is located at 48.0665° N, 119.0153° 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.