Updated July 2026
Rainbow Falls
One of the five Great Falls of the Missouri, a 47-foot, ~1,300-foot-wide block waterfall in Great Falls, Montana, now harnessed by Rainbow Dam.
Before you go
Waterfalls are hazardous by nature — wet rock, cold water, and unstable edges — and flow varies enormously with season and recent rain. Trail figures here describe the route as documented, not conditions today. Check the managing agency for closures and current conditions, and confirm land status before setting out.
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Frequently Asked Questions
Rainbow Falls drops about 47 feet. That makes it the 440th-tallest documented waterfall in this inventory, taller than roughly 35% of the falls listed here. Height comes from published land-manager and survey records, not from our own measurement.
Access is documented as roadside. No trail distance is on record for Rainbow Falls. The nearest town is Great Falls. Confirm access and land status with the managing agency before setting out — some documented falls have no public route at all.
Spring (high flow). Waterfall flow swings enormously with snowmelt and recent rain, so a fall that roars in spring can be a trickle by late summer.
More Montana waterfalls
- Apikuni Falls · 150 ft
- Bird Woman Falls · 560 ft
- Champagne Falls · 80 ft
- Florence Falls · 250 ft
- Great Falls of the Missouri · 87 ft
- Holland Falls · 40 ft
- Kootenai Falls · 90 ft
- Memorial Falls
Sources
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