Coulee Region Trout Unlimited

This post is a biologists attempt to write about the geology of Wisconsin.

The Driftless Area covers about 24,000 square miles (over 15 million acres) and goes by a host of names - the Coulee Region, bluff lands or bluff country, the Paleozoic plateau, or a host of other names. The Driftless Area occurs because Lake Superior's depth along with the highlands between the Driftless Area and Lake Superior helped divert glaciers around this area. Although often treated as a rather homogeneous area, it is much more diverse than we often recognize.

Density-dependent population regulation occurs when the demographic rates - those birth, death, immigration, and emigration rates mentioned earlier - change as a function of the population's density.

The greatest density of spring creeks in the World in a unique cultural and geologic setting - what's not to love?

I figured I would do a Driftless Dozen as a conversation piece. These are my choices - at least when I wrote the article. What are yours?

This is the author's favorite fly. It is quick and easy to tie, durable, and it simply works! Hans Weilenmann's CDC and Elk is a two material fly - CDC and deer hair.

I can't be the only person that has this wish that I could go back to see what the world looked like before our human population boomed.

The Scientific Fly Angler blog will be rolling out, in part, on the Coulee Region TU website. Please share these posts widely!

My favorite fishes are sculpin, other than maybe Brook Trout. I will persuade you of their "coolness" - and share some fly patterns.

These are my 5 hatches for the Driftless Area - Grannom caddis, BWO mayfly, crane flies, Hydropsyche caddis, and winter midges and stones.

Mortality - the word scientists give to the deaths of individuals - is not as simple as it might first look.