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  • HOME
  • About
    • Chapters
      • Headwaters Chapter
      • Gitche Gumee Chapter
      • Twin Cities Chapter
      • Hiawatha Chapter
      • Win-Cres Chapter
    • Our Mission
    • Join MNTU
    • Contact Us
    • Help Support MNTU
  • NEWS
    • Blog
    • Events
    • Monthly Enews
    • Trout Unlimited Minnesota
  • HABITAT
  • EDUCATION
    • Education and Outreach
    • Trout in the Classroom
    • Fishing Skills Programs
    • Great Waters Fly Fishing Expo
    • Foster the Outdoors Program
    • T.U.N.E Camp
  • ADVOCACY
    • Agricultural Runoff
    • Data Centers
    • Feedlots
    • Neonics
    • Nitrates
    • Preventing Fish Kills
    • Public Waters
    • Sulfide Mining
  • FISHING
  • DONATE
Photo credit: Chironomidae Research Group

Community Science for Winter Anglers: Bugs Below Zero

Jason Swingen2026-02-16T16:44:03+00:00

I went to college at Saint Mary’s in Winona, and during the winter months I spent a lot of time hiking and skiing the trails along Gilmore Creek, a classic Driftless trout stream that winds through the back of campus. I still remember the first time I noticed what looked...

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What Happens to Aquatic Invertebrates as Winter Sets In?

Jason Swingen2026-02-16T15:41:11+00:00

Macro of the Month – December 2025 December has always been one of my favorite times to walk a trout stream. The leaves are down, the cold air is fresh, and in many of our springfed trout streams across the state, the water is still flowing. When I bend over to...

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November 2025 Macro of the Month- Northern Caddisflies

Jason Swingen2026-02-16T15:44:50+00:00

Northern Caddisflies (Family Limnephilidae) Last month, we explored the importance of October foliage after it falls into a stream. Let’s take that further! As leaves fall into cold November water, there’s construction underway beneath the surface. Among the cobbles and leaf packs, case-building caddisfly larvae - members of the family Limnephilidae...

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September 2025 Macro of the Month: Beetles

Kristen Poppleton2026-02-16T17:55:03+00:00

All it takes is a little wind on the grass and you might be lucky enough to hear a little plop under the bank – maybe a beetle tumbling into the water to become a late afternoon salmonid snack. In late summer and early fall, beetles are a terrestrial staple...

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Macroinvertebrate of the Month: Grasshoppers (a.k.a. “Hoppers”)

Kristen Poppleton2026-02-16T17:55:06+00:00

It’s August in Minnesota. The heat has settled in, and streamside vegetation hangs thick and heavy over the banks of coldwater streams and rivers across the state. In our backyard, my daughters love to pass the time catching grasshoppers in the tall grass and tossing them into the stream, watching...

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July 2025 Macro of the Month: Ants on the Water and Trout on the Feed

Kristen Poppleton2026-02-16T18:33:12+00:00

One of my favorite surprises of summer trout fishing in Minnesota comes after a good soaking rain. When storms sweep through the valleys, they don’t just raise the rivers a few inches. They send ants tumbling from trees and grass into the currents, and the trout are quick to notice. Ants...

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May 2025 Macro of the Month: Crane Flies

Kristen Poppleton2026-02-16T15:55:32+00:00

Living on a trout stream in southeastern Minnesota, it doesn’t require too much effort to keep an eye on what’s hatching and when. However, it still caught me by surprise to see two adult craneflies on my bathroom floor early one morning in the first week of May. Maybe they...

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Macro of the Month: Dark Hendrickson

Kristen Poppleton2026-02-16T17:59:58+00:00

April 2025 Every spring, as snowmelt charges the streams and the days grow longer, trout anglers eagerly await one of the season’s most iconic hatches: the Dark Hendrickson. This mayfly, known to entomologists as Ephemerella subvaria, helps kick off dry fly season and can offer some great surface action during the...

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The Tiny Winter Black Stonefly: A Cold-Weather Clue to Water Quality: February Macro of the Month

Kristen Poppleton2026-02-16T17:58:23+00:00

For many anglers, winter means tying flies, maintaining gear, and daydreaming about warmer days on the water. But, those that do brave the frigid winter air to chase trout on Minnesota streams are sometimes rewarded with a mid-winter hatch of the tiny winter black stonefly (Allocapnia spp). Although trout feed...

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Recent Posts

  • Contact your Senators to protect the BWCAW
  • Community Science for Winter Anglers: Bugs Below Zero
  • Trout in the Classroom Update – February 2026
  • MNTU Habitat E-news: February 2026
  • An 8-Year Look at the MNTU Education Program

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  • Contact your Senators to protect the BWCAW
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  • Winter Fly Fishing in Minnesota’s Driftless
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  • What Happens to Aquatic Invertebrates as Winter Sets In?
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