When most trout anglers think about culvert replacements, they rightly think of trout passage to critical habitat. Undersized, perched, and crumbling culverts block trout from reaching cold water refuges, spawning grounds, and more habitat. Removing those barriers is a huge benefit to trout fisheries. But often overlooked is the fact that...
If you’ve fished along a trout stream in northeast Minnesota lately, you’ve probably noticed the standing dead spruce and balsam fir, open gaps in the forest canopy, and more brush than you’d expect in what used to be shaded, coniferous woods. It’s not just about aesthetics - it’s a coldwater...
Minnesota Trout Unlimited is dedicated to preserving and improving the health of trout streams across the state. During these cold weeks of early spring, we’ve kicked off our first project of the year in the Sucker River watershed, a top-tier brook trout and steelhead stream east of Duluth. We're implementing...
If you’ve spent any time fishing the cold, clear streams of the Driftless Region, you know that matching the hatch is often the key to success. Hundreds of fly patterns exist to mimic the many species of mayflies, caddisflies, and stoneflies that emerge throughout the season. But in recent years,...
On February 21, 2025 MNTU’s design engineers on its Trout Brook project, Emmons & Olivier Resources, Inc (EOR), received a Water Resources Excellence award from the American Council of Engineering Companies of Minnesota for our recent stream habitat restoration project in Miesville Ravine County Park Reserve. We collaborated with...
Caption: SSL-SWCD staff doing pre-project geomorphological surveys at Amity Creek in Duluth. These data will be used to inform the design of the Amity Creek restoration project – a collaborative project involving SSL-SWCD and MNTU. (Photo: Tim Beaster, SSL-SWCD) By Dr. Jennifer Biederman, Habitat Director Stream restoration has come a long way...
Scuds are freshwater shrimp (bottom right) – a crustacean that lives among benthic invertebrates in the stream.
By Dr. Jennifer Biederman The Driftless Area, spanning parts of Minnesota, Wisconsin, Iowa, and Illinois, is renowned for its spring-fed streams, cold water, and limestone geology. These unique environmental factors create ideal year-round conditions for trout. In streams with the most groundwater influence, both flows and water temperatures remain fairly constant...
By Dr. Jennifer Biederman If there is one thing that many degraded streams across Minnesota have in common, it’s a lack key habitat types that support trout of all stages and ages. Many degraded streams lack riffle habitat. These shallow, fast-flowing sections of a stream, characterized by their choppy water surface...
by Dr. Jennifer Biederman Riffle habitats in trout streams are essential little ecosystems that provide an ideal environment for aquatic macroinvertebrates, which are small, aquatic organisms that play a crucial role in freshwater ecosystems – and the most important food source of stream dwelling trout in Minnesota. What is a riffle?...
