Bruon's link is good infor on the TT section up river from where you intend to be. The section of river you mentioned, while it has some trout that this time of year will be around the trib mouths and cold water seeps, is probably much better smallmouth water than trout water.
There should be a bass anywhere there is a combination of moderate current and some sort of obstruction or shelter, which in the Clarion means rocks. If you're fishing in high daylight, like between say 9AM and 6PM, a good size wooly bugger or fur leech dead drifted through the runs will catch fish. Make sure you get it down some in the flow. If the kids are fishing with spin or spin cast gear, have them flip a spinner or small crankbait like a rebel crayfish or little Rat-L-Trap a little upstream from the rocks and then retrieve it right through the pocket of slack water behind the rock. Or they can do the same thing with a live crayfish or nightcrawler.
The bass in the Clarion aren't hard to catch if you put a lure or fly fairly close to the places they hang out and get it down some.