I live near the Snake river here in Idaho. We are having lots of melt off from the winters snow right now. A little down river is an area called The Milner Miracle Mile. It has the largest white water rapids in the state. Right now they are class V+. Misses Keg and I went down to see them today. They were pretty impressive.
Here is where the water leaves the dam. These gates are nearly always closed. This is as close as they let anyone get to the dam.

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Around the corner the rapids start. There are 1.3 miles of this. I would say to wait for the water to drop some before you dare try this in a Kayak or raft.
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We had a great day. Most of the time it is like a desert around here. We even have cactus.

Hope all are well, Wes