rsquared
If yer looking for piles of fish in easy to get to places, it ain't "worth it" yet.  If you know how to keep after small numbers of fish in low, clear conditions and don't mind some company, you'll have some fun.  
 
My sons and I (and two friends of the oldest son) fished yesterday, and here's what we found . . .
 
Walnut from the Manchester Bridge down to the wall was nearly devoid of fish.  Flows were what you'd expect in early to mid September.  Might've been a few with their noses poked up into the whitewater on a few of those small falls, but I personally could see 2 steelhead in that stretch and I looked pretty thoroughly.  No idea what might've been going on at the wall or in the channel.  
 
There are some from the Manchester Hole up to the falls, but there was about a 1:1 fish to angler ratio yesterday.  My oldest son combat fished and found a few dum ones.  
 
Hardly anything in Trout Run.  Might've been a few hiding in the shade and with their noses in the falls that we couldn't see.  The forecasted south wind was straight outta the northeast yesterday, so wasn't real conducive to fishing there.  Would imagine that when the wind is right, beach fishing is probably still the best bet.  Various reports and posts on social media seem to back this up.  
 
We did find small numbers of fish on Elk in a few spots with nobody else around, and some of 'em were dumb, so that made for an enjoyable late afternoon and evening for us.  
 
I heard a few stream side conversations that the mouth of Elk was dead yesterday morning.  
 
With gardens still producing and lawns still being mowed once or twice a week, cricks ain't gonna be holding much water for long till we get some cold nights and vegetation starts to die.  Lake temps are back up to 68.  Dunno what stream temps were yesterday, but I wet waded all day and wasn't even a little bit cold in the morning.  
 
If you're gonna fish this week, bring a stringer cause most of those fish are gonna go belly up after you fight 'em in these temps.  If you don't like dead steelhead, you probably shouldn't be fishing.  As it is, I like to rope and smoke a few, so I didn't shed any tears when they went for a ride on my red rope and into my cooler.  By the way, red is the new blue, which was the new yellow.   
 
Prediction: It'll start to be "worth it" for lots of fishermen in about 2 weeks, and mid November, like it has been the past 3 years, will be the best time for good numbers of fish in easy to get to places.  

FiveMilePete
 
Thanks for report, R**2.    Been under the weather, so haven't been out much.  Hard to believe nothing in Walnut.  Even last year, at this time there were quite a few fish at Walnut at stop sign. And quite a few in the creek at Trout Run.  Temp is supposed to be 83* today, and sunny, definitely not steely weather.  I'm thinking temp + rain has a lot more to do with numbers than time of year.  Wet wade?  Wow!  I did that in VA. in the summer, for smallmouth.  :-)