Boulder Falls is a waterfall on Tower Creek in Park County, Wyoming, in the Middle Rockies region, with a total height of about 25 feet. It lies about 38.6 miles northeast of West Yellowstone and roughly 110.3 miles southwest of Billings as the crow flies.
At 25 feet it is on the modest side for Wyoming, where the typical waterfall with a recorded height stands around 60 feet; it ranks 167th of 230. The water comes down as a plunge, where the water drops vertically and loses contact with the rock face.
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. Tower Creek carries 2 recorded waterfalls; the biggest of them reaches 132 feet.
There are 114 recorded waterfalls in Park County. Tower Fall, a 132-foot plunge waterfall, is under a mile away. Lost Creek Falls, a 40-foot plunge waterfall, is about 1.9 miles away. Peterson Falls, a 40-foot tiered waterfall, is about 3.3 miles away.
Boulder Falls is located at 44.8941° N, 110.3878° 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.