Sublette County
New Fork River
Live Conditions
New Fork River — Near Big Piney
7-Day Flow
→ Stable
24-Hr Pressure
23.01 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
67° / 46°
Tomorrow
🌦️Drizzle
63° / 51°
Fri
🌧️Rain
56° / 46°
0.59"
Sat
🌦️Drizzle
58° / 41°
0.04"
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.
8.6
Time of Day
Using: 306 CFS · 45.5°F · BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's New Fork River conditions.
🪰 Hatch Calendar
New Fork River · September · Early Fall
🟢 Active now at 45.5°F water
Select month
BWOs returning (size 18-20). Hoppers still productive. Cooling water, active fish, fall colors in the Wyoming Range. Excellent September fishing.
🟢 Active · 🟡 Approaching · ⚪ Seasonal only
River Map
About New Fork River
Scenic tributary of the Green River in the Wyoming Range with good public access and consistent dry fly fishing.
Regulations
Standard Wyoming trout regulations apply; cutthroat and brook trout dominate the upper sections. Wyoming Game & Fish license required. Verify current regs at wgfd.wyo.gov before fishing.
Learn More
Guides to help you fish New Fork River 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…