Island Lake Falls is a waterfall on Fremont Creek in Sublette County, Wyoming, in the Middle Rockies region. It lies about 18.8 miles northeast of Pinedale and roughly 122.9 miles east of Idaho Falls as the crow flies.
Its height has not been recorded in the source data. By form it is a cascade, descending over a series of rock steps rather than in a single drop.
The Middle Rockies are high, glaciated mountain ranges with alpine peaks, subalpine fir and spruce forest, lodgepole pine and grassy intermontane valleys. Snowmelt streams cascade down glacial valleys and canyon walls.
Sublette County holds 8 recorded waterfalls, and several are close by. North Fork Falls, is about 16 miles away. Slide Creek Falls, a 440-foot cascade waterfall, is about 16.1 miles away. Porcupine Creek Falls, 600 feet high, is about 16.2 miles away.
Island Lake Falls is located at 43.0891° N, 109.6455° 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 creek name is confirmed against the federal Geographic Names Information System. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.