One thing to bear in mind: with recent weather, unless it's a spring fed pool, those fish are under a lot of stress in warm water. If that pool is there now, it is likely there in the fall and that may be the best time to answer your questions to assist with survival of caught fish. If you know water is cold, and since they're skiddish, the plop of a worm may put those fish on the defensive. if you own a small fly rod, I'd recommend laying low and casting a small dry fly into the pool. Black parachute adams, elk hair caddis would likely work but if you see other insects in that area use something resembling those.
The water does come down off some hills but they are far from mountains. Although it is running, it's pretty shallow so doubtful it's very cold. I'm just hoping I can get my answer before it dries up or a Raccoon finds them.In a stream as I described do you think these fish stand a chance to survive or make their way down to the lake?