Could it be described as flooding of Biblical proportions? I don't know if you can go that far, but check out this video from flooding in Yellowstone National Park, to Natural Bridge, flooding down the streets of Red Lodge, House Rock being nearly overtaken on the Gallatin River, and a riverfront home on the brink of being washed down the river in Gardiner, Montana.
The flooding has managed to wash out roads and bridges in the park, not to mention the hazardous rock slides and other issues involving the large amounts of water.