Coulee Region Trout Unlimited

This is from an article I wrote for the Winter 2024/25 issue of WisTrout, enhanced here with additional photos and links.

The concept provides a model to understand the physical and biological changes that occur as you move from a streams headwaters downstream

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

This is a post written by Jason Freund, originally for The Scientific Fly Angler blog, which we are publishing on the Coulee Region Trout Unlimited website . Populations are incredibly complex as they are always changing - hence why we talk about population dynamics. The factors responsible for those changes are a mix of unpredictable (weather, floods, fish kills, etc.) and somewhat predictable (interactions among individuals - competition, predation, etc.). However, there ar

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.

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

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

The question mark hopefully tips the reader off that there is some speculation but I will try to bring in some peer reviewed science, some data from Wisconsin streams, and personal experiences of myself and those I know that fish a lot in the Driftless Area. I am less familiar with what other parts of the state might be experiencing but I would interested in your comments about your experiences in the Driftless and elsewhere. (comment at the bottom of this post) Hexagenia lim

A post on the history and flies of the Wolf River got me to thinking about the Driftless. As you see, the area and the trout fishing we maybe take for granted has not always been what it is now. In fact, it really was not that long ago that Driftless fisheries were mostly stocked and not self-sustaining like they are now. Today, over much of the Driftless Area, if it is a blue line on a map, it holds trout. It has not always been that way, a fact we should celebrate but also