Sibley Falls is a 50-foot waterfall on Sibley Creek in Skagit County, Washington, in the North Cascades region. It lies about 25.4 miles northeast of Darrington and roughly 54.8 miles northeast of Marysville as the crow flies.
At 50 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 619th of 941.
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.
Skagit County holds 178 recorded waterfalls, and several are close by. Forest Glen Falls, a 42-foot tiered horsetail waterfall, is about 1.7 miles away. Lower Forest Glen Falls, is about 1.8 miles away. Waterfall 27.7 mi NE of Darrington, is about 2.4 miles away.
Sibley Falls is located at 48.5160° N, 121.2111° 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.