Summit County, Colorado
Blue River
Live Conditions
Blue River — Below Dillon (Silverthorne)
7-Day Flow
→ Stable
24-Hr Pressure
21.65 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☀️Clear sky
62° / 24°
Tomorrow
☁️Overcast
60° / 24°
Mon
🌧️Rain
56° / 37°
0.17"
Tue
🌦️Drizzle
58° / 36°
0.02"
Cold front incoming — go deep with nymphs, surface activity likely slow.
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.
4.8
Time of Day
Using: 66.8 CFS · 43.2°F · Best BWO month
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Blue River conditions.
🪰 Hatch Calendar
Blue River · October · Fall
🟢 Active now at 43.2°F water
🟡 Approaching — within 5°F of trigger range
Select month
Best BWO month (size 18-20). Midges dominant. Flows consistent. Mysis imitations throughout. October on the Blue is underrated — fewer crowds than South Platte, same quality fish.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About Blue River
Gold Medal tailwater below Dillon Reservoir in Silverthorne. Trophy rainbow trout up to 24"+ on Mysis shrimp — use Mysis imitations year-round regardless of what's hatching. Consistent regulated flows make it one of Colorado's most reliable cold-weather fisheries. Can be crowded on summer weekends.
Learn More
Guides to help you fish Blue River with more confidence.
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…
How to Read a USGS Stream Gauge
CFS, gauge height, and why the number on your phone screen determines whether your day is going to be great or a waste of a drive.
How to Pick the Right Fly
Match the hatch is real — but it's not magic. Here's a practical system for choosing between nymphs, dries, and streamers that actually works on…