Pioneer Falls is a waterfall on Falls Creek in Madison County, Montana, in the Middle Rockies region, with a total height of about 40 feet. It lies about 9.2 miles north of Big Sky and roughly 138.2 miles north of Idaho Falls as the crow flies.
At 40 feet it is on the modest side for Montana, where the typical waterfall with a recorded height stands around 250 feet; it ranks 105th of 123. 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. Falls Creek carries 11 recorded waterfalls; the biggest of them reaches 1,054 feet.
There are 3 recorded waterfalls in Madison County. Hoodoo Cascade, a 250-foot cascade waterfall, is about 8.2 miles away. Ousel Falls, a 50-foot tiered waterfall, is about 12.6 miles away. Cedar Falls, 480 feet high, is about 13.4 miles away.
Pioneer Falls is located at 45.4156° N, 111.4072° 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.