Otter Lake Falls is a waterfall in King County, Washington, in the North Cascades region, with a total height of about 159 feet. It lies about 22.2 miles east of Tanner and roughly 36.5 miles east of Sammamish as the crow flies.
At 159 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 267th of 941 with a recorded height. The tallest single drop is 101 feet. The water comes down as a tiered waterfall, falling in several distinct steps one after another, combined with a cascade character. It falls in 3 drops.
The North Cascades are a wilderness of jagged peaks, glaciers and deep, forested valleys of western hemlock, silver fir and Douglas fir, with some of the heaviest snowfall in the country. Meltwater from glaciers and snowfields pours down thousands of feet of cliffs in countless cascades and horsetail falls.
There are 236 recorded waterfalls in King County. Angeline Falls, a 424-foot curtain horsetail waterfall, is under a mile away. Big Heart Falls, a 1,262-foot tiered cascade waterfall, is under a mile away. Upper Foss River Falls, a 337-foot tiered cascade waterfall, is under a mile away.
Otter Lake Falls is located at 47.5884° N, 121.3015° 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.