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

Blue-winged Olives
Baetis

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.

Stream photos

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

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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.

Michigan DNR Fisheries Reports & Publications Library

TimCat

Alanson, MI

Posts: 121

TimCat on Sep 3, 2015September 3rd, 2015, 10:31 am EDT

Hey all, I figured I'd share this. Could be useful if not interesting to go through. Unfortunately the library is only updated until 2005, but the searchable database is great! It dates back to 1930 and has a wide array of studies and reports conducted by the DNR and other organizations (mainly U of M from what I've noticed so far).

http://www.michigan.gov/dnr/0,4570,7-153-10364_52259_19056---,00.html

"If I'm not going to catch anything, then I 'd rather not catch anything on flies" - Bob Lawless

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Sep 3, 2015September 3rd, 2015, 2:16 pm EDT

Wow! Wish every state had such a database.

Jmd123

Oscoda, MI

Posts: 2474

Jmd123 on Sep 3, 2015September 3rd, 2015, 2:45 pm EDT

Tim, I've dipped into this on occasion, and there are some very nice reports on lakes and rivers. Yep, our DNR does a good job of making these publications available to the public.

Jonathon

No matter how big the one you just caught is, there's always a bigger one out there somewhere...

Roguerat

Posts: 456

Roguerat on Sep 3, 2015September 3rd, 2015, 3:58 pm EDT

I've also done some searching through these archives, it takes some digging but it's worth it.
Another good resource is to Google 'macroinvertebrate study of (enter stream of choice) and see what comes up. My college daughter did a couple field trips during a biology class and told me about it; I've done print-outs of a fair number of MI trout streams and the information is all to genus, and in some cases, species level- trout, mayflies, caddis, stoneflies, its all in there. The test station locations are also given and I've tied flies based on this data.

Roguerat

'Less is more...'

Ludwig Mies Vande Rohe

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Sep 4, 2015September 4th, 2015, 6:24 am EDT

We're SO spoiled. And that's a good thing.