Twin Sisters Falls is a waterfall in Whatcom County, Washington, in the North Cascades region. It lies about 17.9 miles east of Sudden Valley and roughly 24.6 miles east of Bellingham as the crow flies.
Its height has not been recorded in the source data.
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.
Whatcom County holds 348 recorded waterfalls, and several are close by. Skookum Creek Falls, is about 1.5 miles away. Sister Glacier Falls, is about 2 miles away. Sister Creek Falls, is about 2.7 miles away.
Twin Sisters Falls is located at 48.6912° N, 121.9574° 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 position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.