There are two stretches that I kayak through the park. Sometimes I go from Dennison Ferry to Green River Ferry and I think this is about a 6 mile trip. The trip from Green river Ferry to Houchens Ferry is 12 miles. I usually catch small mouth and muskie. The stretch from Green River Ferry to Houchens Ferry is better for Muskie and it is slower moving water.
Here is a muskie that I caught on July 4th 2 years ago:
I usually target downed trees in the water for muskies.
I use this site to see what the water level is on Green River:
When I float the Green River I usually look to see what the level is at Munfordville under the Green River Basin section of the site. I've went a lot of times when it is around 5 feet. It is currently showing 9.23 feet.
There are a lot of good camping sites along the second stretch that I mentioned, but I don't know what they would look like right now.