How to use this guide
Southeast Minnesota trout streams run on a different clock than the rest of the state — a winter catch-and-release season, a short harvest window, and another catch-and-release stretch into fall. Everything here was checked against the 2026 Minnesota Fishing Regulations booklet from the Minnesota Department of Natural Resources (MN DNR), effective March 2026 through February 28, 2027 (updated 6/4/26), plus the DNR pages listed in the Sources section. The DNR can issue in-season updates that override the printed booklet — check mndnr.gov/fishing before every trip.
The Driftless at a Glance
The Driftless Area is the unglaciated corner of the Upper Midwest, spanning parts of southeast Minnesota, southwest Wisconsin, northeast Iowa and a sliver of Illinois — the most recent glaciers bypassed it, leaving steep bluffs, cold limestone springs and deeply carved valleys instead of flat glacial till. In Minnesota, the Root River system drains Fillmore, Houston, Winona, Olmsted, Mower, Dodge, Wabasha, Dakota and Goodhue counties. The MN DNR Lanesboro area fisheries office manages this region and tracks dozens of named trout streams feeding the Root River's branches, including the South Branch, Middle Branch and North Branch, plus tributaries such as Forestville Creek, Canfield Creek, Duschee Creek, Crooked Creek and Trout Run Creek. Fish. The DNR's SE Minnesota streams hold wild and stocked brown trout, with brook trout in the coldest spring-fed headwaters; some reaches also see occasional rainbow trout. Specific population data (for example, Forestville Creek's brown trout density) is published per-stream on the DNR's Lanesboro-area fisheries pages — check the stream you plan to fish.
Why the fine print matters. Southeast Minnesota streams are listed separately in the regulations from "statewide" stream trout water, and the rules change by county group, by state park/city boundary, and by date. Read Section 2 before you plan a trip.
MN DNR Rules for 2026
Source: MN DNR, 2026 Minnesota Fishing Regulations, Stream Trout Species Seasons and Limits (streams), p. 32–33. Summarized in our own words — read the booklet for exact wording; in-season updates override it.
| Water | 2026 season | Possession limit |
|---|---|---|
| Streams — Southeast Minnesota (Houston, Fillmore, Mower, Dodge, Olmsted, Winona, Wabasha, Dakota and Goodhue counties) | Jan. 1 – Apr. 10: catch-and-release only. Apr. 11 – Sep. 14: harvest season. Sep. 15 – Oct. 15: catch-and-release only. Oct. 16 – Dec. 31: closed to fishing. | 5 combined stream trout (brook/brown/rainbow/spl ake), only 1 over 16", during the Apr. 11 – Sep. 14 harvest window; otherwise catch-and-release. |
| Streams within SE Minnesota state parks and named cities — Beaver Creek Valley, Forestville (incl. Canfield Creek, South Branch Root River), Whitewater (incl. Trout Run Creek); cities of Chatfield, Lanesboro, Preston, Rushford and Spring Valley | Sep. 15, 2025 – Apr. 10, 2026: catch-and-release only. Apr. 11 – Sep. 14, 2026: harvest season. Sep. 15, 2026 onward: catch-and-release only. | Same 5-combined / 1-over-16" limit during the harvest window. |
| Streams — statewide, outside SE Minnesota and the exceptions above | Apr. 11 – Sep. 30 | 5 combined, only 1 over 16" |
General stream trout regulations that apply statewide (DNR, summarized)
- Fishing hours for stream trout on inland waters run from 1 hour before sunrise to 11 p.m.
- Only 1 line is allowed on designated trout streams, winter or summer.
- Live minnows and other live bait are allowed on most trout streams (not on designated stream trout lakes, where only dried/frozen/pickled minnows are legal); live leeches, worms and waxworms are legal baits.
- Stream trout kept must have head, tail, fins and skin intact during transport.
- A Minnesota trout/salmon stamp validation is required to fish designated trout streams or to possess trout — see Section 3 for exemptions and price.
Read this twice. Minnesota's "winter catch-and-release" season (Jan. 1 – Apr. 10, 2026) lets you fish SE Minnesota trout streams year-round, but every fish must go back — and some stretches close completely in late fall. Always check the current county/park list before you fish, since the DNR periodically updates stream-specific exceptions in the "Waters with Experimental and Special Regulations" section of the booklet.
Licenses & the Trout Stamp
| License (MN DNR 2026 fee schedule) | Fee |
|---|---|
| Resident adult annual angling (18–89) | $25 |
| Resident youth annual angling (16–17) | $5 (no trout/salmon stamp required) |
| Resident 24-hour angling (no stamp required) | $12 |
| Resident 72-hour angling (no stamp required) | $14 |
| Nonresident adult annual angling | $51 |
| Nonresident 24-hour angling (no stamp required) | $14 |
| Nonresident 72-hour angling (no stamp required) | $36 |
| Nonresident 7-day angling | $43 |
| Trout and salmon stamp validation (required ages 18–64) | $10 |
Per the DNR, anyone fishing a designated trout stream or lake, or possessing trout anywhere in Minnesota, needs both a valid angling license and a trout/salmon stamp validation, with listed exceptions: anglers under 18, anglers 65 and older, anglers on a 24-hour or 72-hour license, and anyone otherwise exempt from license requirements. The stamp funds trout stream and lake habitat work, easement acquisition, and stocking. The stamp is now sold as an electronic validation printed on your license; a physical pictorial stamp can be requested for an additional 75 cents. Fees above include the base license price listed in the regulations booklet; some licenses carry a small additional agent or surcharge fee at purchase — confirm the final total on the DNR's online license system.
Gauges & Flows
Driftless spring creeks run cold and relatively stable because limestone springs feed them, but they flash hard after heavy rain in the steep valleys — the DNR's own Lanesboro-area stream reports regularly note flooding and matted-down streamside vegetation after storms. Check a gauge and the DNR's conditions page before you drive.
| Gauge / resource | What it covers |
|---|---|
| USGS 05385000 — Root River near Houston, MN | Mainstem Root River flow, downstream of the forks; historical and current discharge data via USGS. |
| NOAA/NWS gauge LNSM5 — South Branch Root River at Lanesboro | Real-time stage and flow for the South Branch near Lanesboro, including flood-stage thresholds. |
| MN DNR — Southeast Minnesota stream conditions page | DNR Lanesboro office posts a hand-updated table of water clarity/flow by named stream (e.g., Forestville Creek, South Branch at Forestville State Park, Duschee Creek) plus a running fishing-report log. |
Practical notes
- A rising gauge after a thunderstorm usually means blown-out, muddy water for a day or more on these small streams — plan a backup stream in a different sub-watershed.
- USGS and NOAA data are provisional and may be revised.
- This guide does not give a single "safe" wading level — these are small streams but have deep spring holes and undercut banks; use your own judgment and local knowledge.
Access — AMAs & Stream Easements
Access — Aquatic Management Areas & trout stream easements
- The DNR's Aquatic Management Area (AMA) program, created by the 1992 Legislature, administers more than 700 AMAs covering roughly 770 shoreland miles across 73 Minnesota counties; trout stream easements (a type of AMA) are concentrated in cold-water counties like Fillmore and St. Louis.
- Many SE Minnesota trout streams flow through private land, but the DNR has purchased permanent public fishing easements along specific corridors. These easements are typically a defined corridor along the bank, not the whole farm, and are shown on the DNR's online trout stream and AMA maps — always check the map for the exact boundary before leaving the water.
- AMA permitted uses fall into three categories set by the DNR: General Use (angling, hunting, trapping, non-motorized travel, wildlife viewing), Restricted Use (angling, non-motorized travel, wildlife viewing only), and Angling Only (easements purchased specifically for angling, with no other public use).
- Some stream corridors sit inside state parks with full public land status, including Forestville Creek, Canfield Creek and the South Branch Root River in Forestville/Mystery Cave State Park, and Trout Run Creek and the Middle Branch Whitewater River in Whitewater State Park.
- Respect posted boundary signs, stay within the easement corridor where one applies, and do not cross onto adjoining private land without separate permission.
Lanesboro and the South Branch corridor
Lanesboro sits on the South Branch Root River and is the de facto hub for Driftless trout fishing — fly shops, lodging and easy access to Forestville/Mystery Cave State Park water. Other towns with easement and park access nearby include Preston, Chatfield, Rushford and Spring Valley.
Approximate Hatch Chart
The chart below is approximate. It reflects patterns commonly reported for Driftless-area spring creeks and the DNR Lanesboro office's own stream-condition notes (which mention caddis, midges, Blue-Winged Olives, Hendricksons and Brown Drakes through the season); actual timing varies with weather and water temperature. No agency publishes an official hatch calendar for the Root River — check a local fly shop or the DNR's stream conditions page for current activity.
| Food source | Approx. window | Typical sizes | Notes |
|---|---|---|---|
| Midges | Year-round | #18–24 | Useful in winter catch-and-release season. |
| Early black stoneflies | Late winter–early spring | #14–18 | Small, dark; overlooked. |
| Hendrickson / Blue-Winged Olive | Apr–May, Sep–Oct | #14–20 | Reported by DNR stream crews each spring. |
| Caddis (assorted) | May–Sep | #14–18 | All-summer producer; DNR notes year-round midges plus caddis from spring on. |
| Sulphur | Late May–Jun | #16–18 | Evenings. |
| Yellow Sally stonefly | Jun–Jul | #14–16 | One of few SE MN streams with this hatch is Forestville Creek, per DNR notes. |
| Brown Drake | Jun | #10–12 | Reported sporadically by DNR crews on some streams. |
| Trico | Aug–mid Sep, mornings | #20–24 | Defining late-summer Driftless hatch. |
| Hopper / terrestrial | Jul–Sep | #10–16 | Meat-and-potatoes summer pattern. |
Remember: harvest is only legal Apr. 11 – Sep. 14 in SE Minnesota streams; outside that window, including during the Trico season's tail end and all winter, it's catch-and-release only. See Section 2.
The Fly Box & Rigging
A starter trout box for Root River system spring creeks — small, clear, technical water.
| Fly | Imitates | Sizes | How to fish it |
|---|---|---|---|
| Pheasant Tail nymph | General mayfly nymph | #14–20 | Drift tight to undercut banks. |
| Zebra midge | Midge larva/pupa | #18–22 | Dropper, slow pools, winter season. |
| Parachute Adams / BWO | Mayfly duns | #16–22 | During a hatch, drag-free drift. |
| Elk Hair Caddis | Adult caddis | #14–18 | Riffles and evenings, May–Sep. |
| Trico spinner | Trico spinner fall | #20–24 | Dawn, flat pools, long light tippet. |
| Hopper pattern | Grasshoppers | #10–14 | Along grassy banks, summer. |
| Woolly Bugger | Baitfish / general | #6–10 | Undercut banks, high or off-color water. |
| Soft hackle | Emerging insects | #14–18 | Swing through riffles and tailouts. |
Suggested rigging
- Rod: a 7'6"–8'6" 3- or 4-weight suits the small-water, brushy casting on most branches; a 9-foot 4- or 5-weight still works on the wider lower main stem.
- Leader: 9 feet to 5X for general nymphing and dries; step down to 6X–7X for Trico spinner falls and low, clear summer water.
- Wading is often done in sneakers or light boots in small, shallow runs — but watch for deep spring holes and undercut banks.
- A trout/salmon stamp validation is required in addition to your angling license — see Section 3.
Catch-and-release tips. Keep the fish in the water, wet your hands before handling, and remember that outside the Apr. 11 – Sep. 14 harvest window, every stream trout in SE Minnesota must be released immediately.
Resources
Scan or tap before you drive.
| USGS near Houston | DNR stream conditions | DNR fishing regs |
|---|
| Resource | Link |
|---|---|
| USGS 05385000 (Root River near Houston, MN) | https://waterdata.usgs.gov/monitoring-location/05385000/ |
| NOAA/NWS gauge LNSM5 (South Branch Root River at Lanesboro) | https://water.noaa.gov/gauges/lnsm5 |
| MN DNR — SE Minnesota stream conditions | https://www.dnr.state.mn.us/areas/fisheries/lanesboro/stream_conditions.ht ml |
| MN DNR — Fishing regulations | https://www.dnr.state.mn.us/regulations/fishing/index.html |
| MN DNR — 2026 Minnesota Fishing Regulations (PDF) | https://files.dnr.state.mn.us/rlp/regulations/fishing/fishing_regs.pdf |
| MN DNR — Trout and salmon stamp | https://www.dnr.state.mn.us/fishing/trout_streams/stamp.html |
| MN DNR — Aquatic Management Areas FAQ | https://www.dnr.state.mn.us/amas/faq.html |
| MN DNR — Trout stream easements brochure (PDF) | https://files.dnr.state.mn.us/recreation/fishing/trout_streams/easement_bro chure.pdf |
| MN DNR — Fillmore County stream notes (Lanesboro office) | https://www.dnr.state.mn.us/areas/fisheries/lanesboro/opportunities/fillmor e.html |
| More free guides | https://learningtoflyfish.com/field-guides |
Safety
Fly fishing involves real risks. These are general precautions, not a guarantee of safety.
- Flash floods. Driftless valleys are steep; heavy rain can raise small streams fast. Check the gauges and the DNR conditions page, and leave the water if it rises or turns muddy.
- Undercut banks and spring holes. These creeks look small but have deep, cold pockets — wade carefully and probe ahead.
- Private land. Much of the corridor is private; stay within marked DNR easements and state park boundaries and respect posted signs.
- Ticks and poison ivy. Bluff-country brush and tall grass carry both — use repellent and check for ticks after fishing.
- Weather. Leave the water if a thunderstorm approaches — a graphite rod conducts electricity.
- Emergencies. Call 911. Cell coverage can be weak in the deeper valleys.
Sources & Disclaimer
- Minnesota Department of Natural Resources: 2026 Minnesota Fishing Regulations booklet, effective March 2026–Feb. 28, 2027 (updated 6/4/26) — stream trout seasons and limits (statewide and Southeast Minnesota), general stream trout regulations, license and trout/salmon stamp fee schedule.
- MN DNR — Trout and salmon stamp page (stamp purpose, price and exemptions).
- MN DNR — Aquatic Management Areas FAQ (AMA program scope, permitted-use categories).
- MN DNR — Trout Stream Easements brochure (easement corridor concept).
- MN DNR — Southeast Minnesota stream conditions page, Lanesboro area fisheries office (2026 seasonal fishing-report notes referenced for hatch timing and flooding behavior).
- MN DNR — Fillmore County stream notes, Lanesboro area fisheries office (species and stream descriptions for Forestville Creek and Canfield Creek).
- U.S. Geological Survey: site record for gauge 05385000, Root River near Houston, MN.
- NOAA/National Weather Service: gauge LNSM5, South Branch Root River at Lanesboro.
- Hatch and fly information reflects commonly reported Driftless-area patterns and DNR stream-report mentions; presented as approximate guidance, not official data.
Disclaimer
This guide is provided for general information. It was checked against the sources above, but errors can occur, and regulations, in-season updates, access, fees and stream conditions change without notice. Always confirm current rules with the Minnesota Department of Natural Resources, stay within marked public easements and state park boundaries, and respect private land. Fly fishing and wading involve inherent risks — check flow and weather before you go, never wade beyond your ability, and leave the water when storms approach; your safety is your own responsibility. LearningToFlyFish.com is not affiliated with the Minnesota DNR or any agency named in this guide. Full disclaimer: learningtoflyfish.com/disclaimer.
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