Rainbow Falls is a modest but scenic block waterfall in Montana, falling 47 ft.
Rainbow Falls sits on Missouri River. You'll find it in Cascade County, Montana.
This is a roadside waterfall: visible from a road, parking area, or a walk of a few hundred feet. Base a visit out of Great Falls, the closest town.
When to go: Spring (high flow). Like most waterfalls, Rainbow Falls runs highest after snowmelt or heavy rain and can thin out in late summer, so it's worth checking recent streamflow and the land manager's conditions page before a long drive.
