Unfortunately there are not designate fly areas or catch and release in mountour or columbia county but there still is some great fishing to be had. A lot of this fisheries could be better but the water quality is often sub par because of acid mine run off.
Hope this list helps!
Danville:
The mahoning small stream that gets absolutely hammered during the season but receives one the largest stockings around the area by the state and a private club. At times it looks like a down right slaughter. I would stay clear of this area during the primary fishing season. That being said it is a beautiful stream in certain sections. If you wanted to try it, I would fish it near the source in Jerseytown or fish it from the park down to the mouth. It actually does hold wild browns.
Bloomsburg:
Fishing creek is the largest stream in the area and I actually found most of the better fishing to be closer to benton and the state game lands. The stream relies heavily on stocking and is also pressured early in the season. Despite this fact it holds fish year round.
Millville:
Little fishing creek, West creek and lick run are all smaller streams with some great opportunity to catch wild browns. You need to do a lot of exploring and ask for landowner permission.
Elysburg:
Roaring creek and south branch of roaring creek are some of my favorite spots to got but this is another area that gets an extreme amount of pressure during the spring. You can fish for wild browns on the south branch in the shamokin reservoir area. The best, most fishy looking water on the roaring is all on private property. You could try to ask for permission but I have never had any luck.