Thistle Falls is a waterfall on Sedge Creek in Park County, Wyoming, in the Middle Rockies region, with a total height of about 15 feet. It lies about 44.9 miles east of West Yellowstone and roughly 117.6 miles northeast of Idaho Falls as the crow flies.
At 15 feet it is on the modest side for Wyoming, where the typical waterfall with a recorded height stands around 60 feet; it ranks 204th of 230. The water comes down as 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.
There are 114 recorded waterfalls in Park County. Iddings Falls, a 22-foot segmented waterfall, is about 5.7 miles away. Thermal Falls, a 35-foot segmented waterfall, is about 6.1 miles away. Crecelius Cascade, a 75-foot tiered waterfall, is about 6.4 miles away.
Thistle Falls is located at 44.5470° N, 110.2063° 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 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.