Upper Ancient Lakes Falls is a 20-foot waterfall in Grant County, Washington, in the Columbia Plateau region. It lies about 6.8 miles southwest of Quincy and roughly 46.6 miles northeast of Yakima as the crow flies.
At 20 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 851st of 941. By form it is a segmented waterfall, splitting into two or more separate streams as it falls, combined with a plunge character.
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.
Grant County holds 15 recorded waterfalls, and several are close by. Ancient Lake Falls, a 100-foot tiered plunge waterfall, is under a mile away. Crater Coulee Falls, is about 6.7 miles away. Frenchman Falls, a 200-foot tiered plunge waterfall, is about 8.2 miles away.
Upper Ancient Lakes Falls is located at 47.1524° N, 119.9347° W. The listing is based on the World Waterfall Database, 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 waterfall yet.