Sourdough Lake Falls is one of the recorded waterfalls in Whatcom County, Washington, in the North Cascades region. It lies about 41.1 miles northeast of Darrington and roughly 62.4 miles east of Bellingham as the crow flies.
No height measurement has been recorded for it yet.
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 348 recorded waterfalls in Whatcom County. Sourdough Falls, is about 1.5 miles away. Buster Brown Falls, a 165-foot plunge waterfall, is about 2.1 miles away. Waterfall 39 mi NE of Darrington, 190 feet high, is about 2.3 miles away.
Sourdough Lake Falls is located at 48.7568° N, 121.1191° 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.