Gates of the Mountains is a freshwater diving and snorkelling destination in the Mountain West where Perch and Carp are reliably encountered across nearly every site. Walleye, Rainbow Trout, Brown Trout, and Kokanee add variety for those willing to explore further. Visibility is moderate, which suits methodical freshwater diving well. The warmer months from late spring through early autumn represent the most active season, and two local operators serve the area.



11 operators
Fin maps 19 sites in Gates of the Mountains (11 scuba diving sites and 13 snorkelling spots, with some suited to both).
19 more sites to explore












Perch and Carp are the most consistently observed species across sites in Gates of the Mountains. Walleye, Rainbow Trout, Brown Trout, Lake Trout, Kokanee, and Small Mouth Bass have also been recorded, though less frequently. Freshwater Shrimp and various other species are expected across the area as well.
The mix of dive and snorkel sites suggests a range of entry options, with several locations accessible to both activities. Freshwater sites in the region tend to be calmer than open-water marine environments, which can suit newer divers. Checking with local operators such as Scuba Bozeman or A to Z Scuba is the best way to identify which sites match your skill level.
Two operators serve the Gates of the Mountains area: Scuba Bozeman and A to Z Scuba. Both can provide guidance on site selection, local conditions, and equipment. Contacting them ahead of your visit is advisable, particularly for advice on visibility and seasonal access.
Visibility in Gates of the Mountains falls into a moderate range, typical of many freshwater environments in the Mountain West. There is no current temperature data available for the region, so divers should enquire locally about thermal conditions before choosing exposure protection. The warmer months tend to bring the most comfortable diving and snorkelling conditions overall.