Sublette County
Green River — Fontenelle
Live Conditions
Green River — Fontenelle — Below Fontenelle Reservoir
7-Day Flow
→ Stable
24-Hr Pressure
23.79 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌦️Drizzle
72° / 48°
Tomorrow
🌦️Drizzle
71° / 51°
Fri
🌧️Rain
61° / 47°
0.27"
Sat
☁️Overcast
61° / 45°
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.
7.6
Time of Day
Using: 952 CFS · 62.2°F · BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Green River — Fontenelle conditions.
🪰 Hatch Calendar
Green River — Fontenelle · September · Early Fall
🟢 Active now at 62.2°F water
🟡 Approaching — within 5°F of trigger range
Select month
BWOs returning (size 18-20). PMDs tapering. Hoppers still effective. Excellent fall fishing — cooling water and consistent flows.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About Green River — Fontenelle
Cold tailwater below Fontenelle Reservoir in western Wyoming. Consistent fishing with excellent midge and dry fly action.
Regulations
Catch-and-release only for trout below Fontenelle Dam, with artificial lures only in the special-regs tailwater section. Wyoming Game & Fish license required. Verify current regs at wgfd.wyo.gov before fishing.
Learn More
Guides to help you fish Green River — Fontenelle with more confidence.
Trout Species of Wyoming — A Fly Angler's Field Guide
Wyoming holds native Cutthroat subspecies found nowhere else on Earth. How to identify Snake River Finespotted, Yellowstone, and Colorado River…
Wyoming Fishing Regulations for Fly Anglers
Licenses, the Conservation Stamp, year-round seasons, no trout stamp, and the river-specific rules that matter on the Grey Reef, Snake, and Bighorn.
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…