Well, I found this back when I was dreaming anything could be run. It’s not much of anything and would probably never get enough water (small watershed) but it’s in RockPile Mountain Wilderness. I think it’s referred to as Cave Branch on the map.
Put in on the Saint near Black Mtn. Falls on Hwy E and float on down to Cave Creek, drag your kayak 1/2 mile up Cave and there is a nice 20′ water fall—good recovery pool. Nice summer time swimming hole, can leap off—nice secluded spot.