Interloper Falls is a waterfall in Whatcom County, Washington, in the North Cascades region, with a total height of about 200 feet. It lies about 30.6 miles north of Darrington and roughly 47.2 miles east of Bellingham as the crow flies.
At 200 feet it stands in the tallest quarter of Washington’s 941 waterfalls with a recorded height, ranking 199th; the typical Washington waterfall is about 82 feet.
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. Electric Butte Falls, is about 1.1 miles away. Middle Berdeen Falls, an 86-foot tiered horsetail waterfall, is about 1.5 miles away. Green Lake Falls, a 980-foot tiered horsetail waterfall, is about 1.6 miles away.
Interloper Falls is located at 48.6874° N, 121.4583° 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.