Chasm Falls is a 16-foot waterfall on Hyalite Creek in Gallatin County, Montana, in the Middle Rockies region. It lies about 19.8 miles south of Bozeman and roughly 121.7 miles west of Billings as the crow flies.
At 16 feet it is one of the lowest falls in the state’s records: of the 123 Montana waterfalls with a documented height only 1 are shorter, while the typical Montana waterfall stands around 250 feet. The tallest single drop is 10 feet. By form it is a tiered waterfall, falling in several distinct steps one after another. It falls in 2 drops.
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. Hyalite Creek carries 5 recorded waterfalls; the biggest of them reaches 80 feet.
Gallatin County holds 14 recorded waterfalls, and several are close by. Shower Falls, a plunge waterfall, is under a mile away. Apex Falls, a tiered waterfall, is under a mile away. S’il Vous Plait Falls, a plunge waterfall, is under a mile away.
Chasm Falls is located at 45.3994° N, 110.9564° 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.