Douglas / Jefferson County, Colorado
Cheesman Canyon
Live Conditions
Cheesman Canyon — Below Cheesman Reservoir
7-Day Flow
↑ Rising
24-Hr Pressure
23.24 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌤️Mainly clear
94° / 61°
Tomorrow
🌦️Drizzle
93° / 63°
0.02"
Tue
☁️Overcast
88° / 67°
Wed
🌧️Rain showers
94° / 60°
0.71"
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.
9
Time of Day
Using: 106 CFS · PMDs
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Cheesman Canyon conditions.
🪰 Hatch Calendar
Cheesman Canyon · July · Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
PMDs (size 16-18) mid-morning. Caddis evenings. The 5-mile hike deters crowds — fish are noticeably less pressured than any other Gold Medal South Platte section. Terrestrials effective on canyon walls.
River Map
About Cheesman Canyon
Remote Gold Medal South Platte canyon reached only by the 5-mile Gill Trail (#610). Clear, low-gradient water demands 6-7X tippet, accurate casts, and full stealth. One of the most technically demanding — and rewarding — fisheries in Colorado. The hike keeps pressure low year-round.
Learn More
Guides to help you fish Cheesman Canyon 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…