Bois Brule Fishing Forecast
Fly fishers plan Wisconsin trips on the Bois Brule because it stacks credible wading access, recognizable insect cycles, and trout that respond when flows align. Expect classic freestone rhythm: push during stable or dropping flows after fronts, then back off when the river spikes and color returns in 24–48 hours. River-specific intel: The Bois Brule is Wisconsin's most famous trout stream, flowing into Lake Superior and offering native brook trout, brown trout, and migratory steelhead. USGS gauge 04030500 tracks live flow and temperature for planning wade or float days.
Constant 66°F water flows out of the bottom-release dam and into the Bois Brule at seasonal CFS. Expect a 4/10 window. Top pick: a Parachute Hopper.
Complex season — varies by section
Lake Superior tributary - special seasons. Some sections Mar 29 - Nov 15. Others follow general inland (May - Oct 15)
Forecast and on-page guide updated September 8, 2026 (UTC). Open the app for hourly conditions.
Today's Fishing Conditions
Fair
Updated 10:40 AM
66°F
--
4 AM - 6 AM
Parachute Hopper
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Quick Facts
Brook Trout, Brown Trout, Rainbow Trout, and Steelhead
freestone
54°F - 64°F
What Makes the Bois Brule Unique?
Signature hatch or window
BWO (Mayfly) is a headline hatch to watch in September. Peak activity often tracks 42–55°F water temps.
Distinctive access
Brule River State Forest: Multiple access points in state forest.
Rules anglers miss
Special regulations in some areas.
September Fishing Tactics
Primary Targets
Recommended Tactics
Fall fishing improves. BWOs return, browns become aggressive.
September Hatches
BWO
Mayfly
Spring and fall on cloudy days
Caddis
Caddis
Evening hatches throughout season
Trico
Mayfly
Early morning spinner falls
Hopper
Terrestrial
Summer terrestrial fishing
Isonychia
Mayfly
Slate Drake, evening hatches
October Caddis
Caddis
Large fall caddis
Year-Round Fishing Guide
| Month | Water Temp | Tactics |
|---|---|---|
| January | 32-38°F | Nymphing, Streamers, Limited |
| February | 32-40°F | Nymphing, Streamers, Limited |
| March | 36-46°F | Dry Flies, Hendricksons, Caddis |
| April | 44-54°F | Dry Flies, Hendricksons, Caddis |
| May | 52-62°F | Dry Flies, Hendricksons, Caddis |
| June | 58-68°F | Hex, Terrestrials, Tricos |
| July | 62-70°F | Hex, Terrestrials, Tricos |
| August | 62-68°F | Hex, Terrestrials, Tricos |
| September(Now) | 54-64°F | Streamers, Egg Patterns, BWOs |
| October | 46-56°F | Streamers, Egg Patterns, BWOs |
| November | 38-46°F | Streamers, Egg Patterns, BWOs |
| December | 32-38°F | Nymphing, Streamers, Limited |
Spawning Seasons
Please respect spawning fish and their redds. Avoid fishing over actively spawning trout.
Brown Trout
Spawn months: October, November
Night spawning common. Males become very dark with pronounced kype during spawn.
Rainbow Trout
Spawn months: March, April
Resident rainbow trout spawn in smaller tributaries and tend to build smaller redds than steelhead.
Brook Trout
Spawn months: September, October
Males develop vibrant red bellies and white-edged fins during spawning. Early fall spawners.
Steelhead
Spawn months: March, April, May
Spring-run steelhead are particularly vulnerable during spawning. Avoid wading in gravel runs during March-May. Anadromous form of rainbow trout.
Access Points & Parking for Bois Brule
Brule River State Forest
Multiple access points in state forest.
Stone's Bridge
Popular access to productive water.
Cedar Island
Upper river access.
Highway 2
Access near Lake Superior.
How to Fish Bois Brule: Tips & Tactics
The Bois Brule is Wisconsin's most famous trout stream, flowing into Lake Superior and offering native brook trout, brown trout, and migratory steelhead.
Best Times of Day
Spring steelhead runs are legendary. Summer offers resident trout fishing. Fall brings additional steelhead and salmon.
Recommended Techniques
Indicator nymphing for steelhead. Dry flies for resident trout. Match hatches when active.
Water Conditions
Cold, clear water from Lake Superior influence. Upper river holds native brook trout. Presidents have fished here.
Fly Selection
Egg patterns for steelhead. Adams and caddis for resident trout. Streamers for larger fish.
When is the Best Time to Fish Bois Brule?
Spring
Steelhead runs are legendary. Prime season.
Summer
Resident trout fishing. Fish early and late.
Fall
Additional steelhead runs. Browns active.
Winter
Limited - some open water steelhead.
Recommended Equipment for Bois Brule
Rod
9-foot, 5-weight for trout. 7-8 weight for steelhead.
Line
Floating for trout. Sink-tip for steelhead.
Leader & Tippet
Varies by target species.
Waders
Breathable waders. Insulated for steelhead.
Essential Flies
Bois Brule Fishing Regulations
Season
Check Wisconsin DNR for current regulations.
Limits
Varies by section and species.
Special Regulations
Special regulations in some areas.
Bait Restrictions
Check by section.
Notes
Wisconsin's most famous trout stream.
Always verify current regulations with Wisconsin fish and wildlife agency before fishing. Regulations can change annually.
Fly Shops & Guides Near Bois Brule
Local Fly Shops
- Superior Fly Angler - Duluth
- Brule River Classics
- Lake Superior Fly Shop
Guide Services
- Brule River Guides
- Wisconsin Steelhead Guides
- Lake Superior Anglers
Optimal Fishing Conditions
Optimal Flow
200 - 500 CFS
Best fishing conditions
Optimal Water Temperature
48° - 62°F
Ideal for active trout
Other Rivers You Might Like
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West Fork Kickapoo River
Big Green River
Elk Creek
Bois Brule — frequently asked questions
When is the best time to fish the Bois Brule?
Fall fishing improves. BWOs return, browns become aggressive.
What flies should I bring to the Bois Brule?
For the Bois Brule (freestone), carry: Egg Pattern, Adams, Elk Hair Caddis, Woolly Bugger, Pheasant Tail.
What water temperature is best for trout on the Bois Brule?
On the Bois Brule, trout hold between 48° and 62°F. In summer, expect temps to swing with air temperature — fish early.
Do I need a fishing license for the Bois Brule?
Yes — you need a valid Wisconsin fishing license to fish the Bois Brule. Local season: Check Wisconsin DNR for current regulations.. Daily limit: Varies by section and species..
What hatches should I watch for on the Bois Brule in September?
BWO is the signature hatch on the Bois Brule in September. Match size and adjust leader size to 5X-6X. The fish key in on the emergence during low-light hours, so plan to be on the water at first light.
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