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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Dec 3, 2009December 3rd, 2009, 2:23 am EST
I just received an email from a friend who received an email from Yellow Breeches Outfitters that indicates that the PA Fish & Boat Commission has built a dam at the south end of Children's Lake to somehow improve the fishing in the creek.

I park there in the summer to fish Tricos along the Allenberry water and have noticed over the past number of years the almost total absence of trout in the run and just didn't know where all the fish had gone. I can remember seeing lots of trout in ever riffle and run and many large brookies to 16" and numerous piggy browns and rainbows to 20".

Here is an excerpt from the YBO email:

"This fall, the PA Fish & Boat Commission began a project aimed at making the "Run" a viable fishery again. Their solution involved placing a dam at the south end of Children's Lake, at a point where much water was being lost. Water flows into the Run are now much improved. We thank CVTU for their initiative and cooperation with the PFBC in this vital work."
Catskill fly fisher for fifty-five years.
Pleasant Gap, PA

Posts: 1197
Shawnny3 on Dec 3, 2009December 3rd, 2009, 4:19 am EST
So I presume this is a very small dam meant just to moderate flows?

Jewelry-Quality Artistic Salmon Flies, by Shawn Davis
Altoona, PA

Posts: 25
Bippie on Dec 3, 2009December 3rd, 2009, 4:36 am EST
Haven't fished there in about 15 years.... used to be a fantastic stretch to fish.... loaded with trout! I have pictures of that stretch with "herds" of trout throughout the run section. If I remember correctly the Run was totally dependent on overflow from the Boiling Springs Lake, the old spillway was not controllable thus the Run fluctuated greatly and in the late summer it would become very small and low.
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Dec 3, 2009December 3rd, 2009, 9:31 am EST
I was thinking more along these lines -

Catskill fly fisher for fifty-five years.
JOHNW's profile picture
Chambersburg, PA

Posts: 452
JOHNW on Dec 6, 2009December 6th, 2009, 5:53 am EST
Actually the Run was very constant and reliable precisely because it depended on the outflow from the lake. The lake is 100% spring fed and has a flow rate of something like 40000gal/hr with very little fluctuation. This means the Run had a constant supply of fresh cold water and would actually moderate teh flows of the Breeches proper. In fact in many summers the run is the only thing that keeps the regs section reasonably cool.
I think a significant part of the perceived variability in flow has more to do with the changes of flow on the Breeches proper. Early in the year the Breeches is high and water in the run would "back up" then as water levels fall the Run appears to lose flow.

On the point of the dam I think the Lake was Drawn down last spring and early summer in an effort to repair the dam in points where it was leaking and starting to errode. I have not been to BS lately but if they added a dam of any sort I would guess it would be over by the boat launch in the corner of the lake by the town pool (which by the way is also feed by the spring (probably one of the coldest pools I have ever been in)
"old habits are hard to kill once you have gray in your beard" -Old Red Barn
Altoona, PA

Posts: 25
Bippie on Dec 6, 2009December 6th, 2009, 10:14 am EST
I would agree that the water level of the Breeches itself affected the the water level in the Run section.
Martinlf's profile picture
Palmyra PA

Posts: 3047
Martinlf on Dec 7, 2009December 7th, 2009, 2:35 pm EST
The fish in the run are stocked, and move out and/or get poached over time, so the number and size of fish is dependent on stocking more than anything, and that seems to vary greatly from time to time.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

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