Rainbow Falls

Rainbow Falls (originally "Handsome Falls") is a waterfall on the Missouri River in Great Falls, Montana, just upstream from the Crooked Falls and downstream from Colter Falls and Rainbow Dam. It is 47 feet high and 1,320 feet wide. The waterfalls are part of the five-tiered Great Falls of the Missouri. The river spills over a sheer ledge of sandstone in the Kootenai Formation, forming the falls. The falls used to flow (with a great deal of force) year-round but in 1914 the river shortly upstream was dammed for hydroelectric power, so it can almost totally dry up in the summer.