Vermillion River
Fly fishing in Minnesota · Advanced · Best seasons: Spring, Summer, Fall
Target Species
Brown Trout
About This Water
A unique trophy trout fishery located in the southern Twin Cities suburbs, featuring large brown trout in a prairie stream setting.
Fishing Recommendations
🎣 Location Overview
The Vermillion River is a unique gem in the world of fly fishing—a "trophy trout stream in a cornfield." Located just 30 minutes south of Minneapolis/St. Paul in Dakota County, it is one of the few places in the world where you can find a self-sustaining population of trophy Brown Trout so close to a major metropolitan area.
What makes the Vermillion special is that it is a low-gradient, spring-fed stream. Unlike the rocky, tumbling creeks of the Driftless Area further south, the Vermillion meanders through suburban landscapes and agricultural fields. It features deep, undercut banks, silty bottoms punctuated by gravel runs, and heavy overhead cover. Because it is fed by cold-water springs, it remains remarkably cool even during the heat of a Minnesota summer, providing a stable habitat for large, wild fish.
🐟 Target Species & Behavior
The primary draw is the Wild Brown Trout.
- Behavior: These are not your typical "naive" hatchery fish. The Vermillion Browns are notoriously wary and highly sensitive to vibration and shadows. They are "homebodies" that stake out specific territories—usually a deep undercut bank or a tangled log jam.
- Holding Patterns: Look for fish in the "dark water." They rarely sit in the middle of a shallow riffle during the day. Instead, they hug the banks, sit under overhanging grasses, or hover just behind submerged timber.
- Feeding: They are opportunistic but lean toward high-calorie meals. While they take midges and mayflies, the larger specimens (18”–22”+) are predatory, feeding heavily on sculpins, crayfish, and smaller trout.
📅 Best Times to Fish
- Spring (April - May): This is prime time. As the water warms into the 50s, the fish become aggressive. You’ll see the first major hatches (Blue Winged Olives and Hendricksons).
- Summer (June - August): The Vermillion is famous for its Terrestrial season. While other local streams might get too warm, the Vermillion stays fishable. Early mornings and late evenings are best to avoid the midday sun.
- Fall (September - October): Pre-spawn behavior makes the larger Browns territorial and aggressive. This is your best chance to land a "monster" on a streamer.
- Prime Windows: Low-light conditions are your best friend. Overcast, drizzly days are significantly more productive than bright, sunny days.
🪰 Recommended Flies & Techniques
Top Fly Patterns
- Nymphs: Zebra Midges (#18-22), Pheasant Tails (#16-18), and Pink Squirrels (#14-16).
- Dry Flies: Parachute Adams (#16-18), Elk Hair Caddis (#14-16), and Trico patterns in late summer.
- Terrestrials: Hippo Hoppers, Fat Alberts, and Foam Beetles (#8-12).
- Streamers: Black or Olive Woolly Buggers, Sex Dungeon (small/medium), and Sculpin patterns.
Effective Techniques
- Tight-Line Nymphing: Because the river is narrow and brushy, traditional indicator fishing can be difficult. A Euro-style or tight-line approach allows you to probe the deep holes without snagging the bank.
- The "Plop" (Terrestrials): During mid-summer, don't be afraid to let your hopper hit the water with a "splat" right against the bank. This mimics a grasshopper falling in and triggers a reactionary strike.
- Streamer Stripping: Cast downstream and across, swinging the fly under the opposite undercut bank. Give it short, erratic strips.
💡 Pro Tips & Local Knowledge
- Stealth is Mandatory: The Vermillion is slow-moving. If you walk heavy on the bank, the vibrations will spook the fish before you even pull line off your reel. Stay low and wade upstream whenever possible.
- Focus on the "Bends": The most productive water is almost always on the outside of a bend where the current has carved out a deep trough under the grass.
- The "Empire" Section: The stretch near the town of Empire (Station 19 area) is classic Vermillion water. It’s technical but holds some of the largest fish in the system.
- Gear Choice: A 9-foot 5-weight is standard, but if you are focused on the tight, brushy upper sections, a 7.5-foot 4-weight offers better maneuverability.
⚠️ Important Information
- Regulations: The Vermillion River has specific regulations. The main stem is Catch and Release only for Trout. You must use barbless hooks (or pinch your barbs) to protect the wild population.
- Access: Much of the river flows through private land, but there are excellent DNR Easements and public parks (like Rambling Woods or the Farmington section). Always look for the green "Trout Stream Access" signs.
- Thermal Protection: While the river stays cool, always carry a thermometer. If the water temp hits 68°F, stop fishing to prevent fish mortality.
- Permits: A valid Minnesota Fishing License and a Trout Stamp are required for all anglers.
Guide's Final Word: The Vermillion is a "thinking person's" river. It will frustrate you with snags and spooky fish, but the reward of a wild, buttery Brown Trout in the heart of the suburbs is worth every tangled leader.
Bug Hatches & Matching Flies
| Hatch | Type | Peak months | Time of day | Hook sizes | Matching flies |
|---|---|---|---|---|---|
| Blue Winged Olive Baetis spp. | mayfly | March, April, October, November | Late Morning/Afternoon | #18-22 | RS2 #18-22, Parachute Adams #18-22, Pheasant Tail #18-20 |
| Chironomid / Midges Chironomidae | midge | February, March, April | Mid-day | #20-26 | Zebra Midge #20-24, Griffith's Gnat #20-22, Palomino Midge #22-24 |
| Hendrickson Ephemerella subvaria | mayfly | May | Afternoon | #12-14 | Hendrickson Sparkle Dun #12-14, Red Quill #14, Gold Ribbed Hare's Ear #12-14 |
| Sulphur / Pale Evening Dun Ephemerella invaria/dorothea | mayfly | June, July | Evening | #14-18 | Sulphur Parachute #16-18, CDC Sulphur Emerger #16-18, Pheasant Tail #16-18 |
| Spotted Sedge / Tan Caddis Hydropsyche spp. | caddis | May, June, July | Evening/Dusk | #14-18 | Elk Hair Caddis #14-16, Holy Grail Caddis #14-18, LaFontaine's Deep Sparkle Pupa #14-16 |
| Light Cahill Stenacron interpunctatum | mayfly | June, July | Evening | #12-14 | Light Cahill #12-14, Cream Usual #14 |
| Trico Tricorythodes spp. | mayfly | July, August, September | Early Morning | #20-24 | Trico Spinner #20-24, Sunken Trico Spinner #22 |
| Terrestrials (Hopper/Ant/Beetle) Orthoptera/Formicidae/Coleoptera | terrestrial | July, August, September | Mid-day/Afternoon | #8-16 | Fat Albert #8-12, Cinnamon Ant #14-18, Black Foam Beetle #12-16 |
| Little Brown Stonefly Nemoura spp. | stonefly | March, April | Mid-day | #14-16 | Early Brown Stone #14-16, Copper John #14-16 |
| White Miller Ephoron leukon | mayfly | August | Late Evening | #12-14 | White Wulff #12-14, White Miller Paradox #14 |