Thermal Falls is a waterfall on Astringent Creek in Park County, Wyoming, in the Middle Rockies region, with a total height of about 35 feet. It lies about 41.3 miles east of West Yellowstone and roughly 117.5 miles southwest of Billings as the crow flies.
At 35 feet it is on the modest side for Wyoming, where the typical waterfall with a recorded height stands around 60 feet; it ranks 152nd of 230. The water comes down as a segmented waterfall, splitting into two or more separate streams as it falls.
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. Bluff Creek Falls, is about 3.3 miles away. Iddings Falls, a 22-foot segmented waterfall, is about 4.8 miles away. Thistle Falls, a 15-foot cascade waterfall, is about 6.1 miles away.
Thermal Falls is located at 44.6239° N, 110.2653° 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.