Great Lakes
Blue River
Gauge data unavailable for Blue River.
Check USGS directly ↗
24-Hr Pressure
29.08 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌦️Drizzle
81° / 69°
0.09"
Tomorrow
☁️Overcast
89° / 71°
Tue
🌫️Foggy
91° / 69°
Wed
🌦️Drizzle
88° / 72°
0.02"
Weather by Open-Meteo · No API key · Updated every 30 min
What should I fish today?
⚡ AIAI-powered recommendation using today's live flow, temperature, and hatch data.
Time of Day
Using: BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Blue River conditions.
🪰 Hatch Calendar
Blue River · September · Early Fall
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
BWOs returning (size 18-20). Cool nights, active fish.
River Map
About Blue River
The Blue River in Grant County is one of Wisconsin's premier Driftless wild-trout streams and carries an Enhanced Resource Waters (ERW) designation — meaning catch-and-release only and artificials only on the protected sections. Heavy populations of wild brown trout in technical limestone water. The ERW status reflects decades of habitat work and the river's importance as a Driftless reference fishery.
Regulations
Enhanced Resource Waters (ERW) designation — catch-and-release only, artificials only on the protected sections. Wisconsin Fishing License required ($20 resident + $10 trout/salmon stamp = $30). Season opens first Saturday in May. Verify Grant County section-by-section regulations in current Wisconsin DNR trout regulations. No active USGS gauge — check with southwest WI fly shops.
Learn More
Guides to help you fish Blue River with more confidence.
Wisconsin Trout Fishing Regulations Guide
Wisconsin fishing license + $10 trout/salmon stamp ($30 resident total), the first-Saturday-in-May trout opener, the Wolf River Menominee tribal…
Trout Species of Wisconsin
Wisconsin's native Brook Trout (cold headwaters and far-northern rivers), the introduced Brown Trout that dominates the limestone Driftless spring…
How Barometric Pressure Affects Fishing (And How to Use It)
That gorgeous bluebird day after a cold front? Worst fishing of the year. Here's the data behind why pressure changes matter more than the weather…