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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Lateral view of a Female Sweltsa borealis (Chloroperlidae) (Boreal Sallfly) Stonefly Adult from Harris Creek in Washington
I was not fishing, but happened to be at an unrelated social event on a hill above this tiny creek (which I never even saw) when this stonefly flew by me. I assume it came from there. Some key characteristics are tricky to follow, but process of elimination ultimately led me to Sweltsa borealis. It is reassuringly similar to this specimen posted by Bob Newell years ago. It is also so strikingly similar to this nymph from the same river system that I'm comfortable identifying that nymph from this adult. I was especially pleased with the closeup photo of four mites parasitizing this one.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Hunter1
Hunter1's profile picture
Maryland

Posts: 27
Hunter1 on Jun 14, 2020June 14th, 2020, 8:36 am EDT
Hi, I fished the west branch of octoraro creek last month, didn't do to bad, few small trout. Creek is new to me. I think it's a stocked stream. How long can you fish the creek before Temps get to high. Thanks.
Martinlf
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Moderator
Palmyra PA

Posts: 3047
Martinlf on Jun 16, 2020June 16th, 2020, 4:59 am EDT
I'm not sure; it's a bit too far for me to drive for stocked fish, but I've read about it. It's probably best to take a stream thermometer and check. Anything above 68 degrees would be approaching too hot.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Hunter1
Hunter1's profile picture
Maryland

Posts: 27
Hunter1 on Jun 16, 2020June 16th, 2020, 9:15 am EDT
Thanks. Thats what I usauly do.
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Jun 16, 2020June 16th, 2020, 9:19 am EDT
As Louis says, trout get stressed as temps approach 70 F. Browns can handle a bit warmer, rainbows need it cold, and brookies need it REALLY cold. They will get sluggish at these temps anyway and not bite much, but if you do get them on in warm water it stresses the hell out of them. When I wet wade and the water no longer feels nice and cool, it's time to stop fishing for a while. Or, go for warmwaters! Smallies or a bass/panfish pond, they like it warm! 75 F and it's a feeding frenzy.

Tight lines!

Jonathon

P.S. Now in a pond situation...my little [REDACTED] Pond brookie hole gets as warm as you would expect a pond to get in summer. Then how the heck do the brookies survive? Up into the spring-fed feeder creek they go, and/or sit right on the bottom in a frigidly cold layer or even in the springs themselves (have seen it snorkeling, Frisbee-sized saucer-shaped depressions on the bottom with c-c-c-cold water coming out at you). Of course, the top waters are much warmer, so the brookies dash up madly through the warm stuff to absolutely SMASH anything on the surface (caddisflies, hoppers, MY flies!) with a big old splash! Makes for very dramatic hits... ;oD
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Jun 16, 2020June 16th, 2020, 9:24 am EDT
I checked Keystone Fly Fishing and the authors said it tends to warm up in late June. It depends also on water levels, and, of course, the air temperature. Lower water tends to warm quicker. Glad to hear you are careful; some of those fish may hold over. Tight lines!
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Hunter1
Hunter1's profile picture
Maryland

Posts: 27
Hunter1 on Jun 16, 2020June 16th, 2020, 11:14 pm EDT
Thanks guys, I was figuring of giving the creek a rest till fall. I did fish the Gunpowder in MD yesterday, caught 2 in the collage pool. Everything was great. Tight lines.
Martinlf
Martinlf's profile picture
Moderator
Palmyra PA

Posts: 3047
Martinlf on Jun 22, 2020June 22nd, 2020, 1:24 am EDT
Sounds like a good idea. I'm probably going to rest Penns Creek until fall myself. Glad to year you had some luck on the Gunpowder. I hope to fish it some day.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Hunter1
Hunter1's profile picture
Maryland

Posts: 27
Hunter1 on Jun 22, 2020June 22nd, 2020, 7:39 am EDT
Martin, The GP is a real great river to fly fish. You really have to give it a shot. Tight lines.

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