Upper Mesa Falls in Eastern Idaho is on the Henry's Fork section of the Snake River. It falls 114 feet and is 200 feet wide. Nearly 1 billion gallons flow over it per day at its peak. This is a good time to go. Easy hike from the road and about an hour from Idaho Falls. Spectacular and amazing though not that widely known outside the state. Just a half mile down the road the lower falls is also nature and tourist site you must stop at. Keep an eye out for black bears, we saw one not far from here.