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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 Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for 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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Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Mar 15, 2010March 15th, 2010, 7:12 pm EDT
"Most recent instantaneous value: 2,250 03-16-2010 02:15 EDT"

Was up to around 8500 cfs a few days ago WOW!



Catskill fly fisher for fifty-five years.
CaseyP
CaseyP's profile picture
Arlington, VA/ Mercersburg, PA

Posts: 653
CaseyP on Mar 16, 2010March 16th, 2010, 1:13 am EDT
aren't stream gauges nifty? last year in the first week of May, a cloudburst raised the river overnight from around 500 cfs to nearly 1500. forewarned, we fished elsewhere!
"You can observe a lot by watching." Yogi Berra
Lastchance
Portage, PA

Posts: 437
Lastchance on Mar 17, 2010March 17th, 2010, 11:09 am EDT
Hi! I don't think we'll be fishing the Little J for awhile.I bet it will take a week to get to a fishable level.
Bruce
Troutboomer
Tyrone, Pa.

Posts: 5
Troutboomer on Mar 18, 2010March 18th, 2010, 12:10 am EDT
The "j" will be down to 1,000 CFS by Saturday noon, March 20th. There are only a few large pools that can be fished at this level even though the water clarity is already fair to good. I have seen flies (sulfers) hatch at over 900 CFS and fish feed on them, but this is unusual. Right now I am only seeing a few black stone flies and a few olives. Water temps are also still quite low. It was 38.3 degrees yesterday morning at 8am and rose to 45.9 degrees by 5 pm. I start looking for grannom caddis when temps reach 50 degrees by their mid-morning emergence time. This usually happens between the 12th and 16th of April although in 2005 I witnessed the first fishable grannoms on April 10th, the earliest date since I started keeping records in 1980. When the Redbuds bloom so do the grannoms!

Bill Anderson
Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Mar 18, 2010March 18th, 2010, 9:11 pm EDT
Moved post to "Fishing Reports".
Catskill fly fisher for fifty-five years.

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