Island Park / Ashton
Fall River
Live Conditions
Fall River — Near Squirrel
7-Day Flow
→ Stable
24-Hr Pressure
24.86 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☀️Clear sky
71° / 33°
Tomorrow
☁️Overcast
80° / 42°
Thu
🌧️Rain
66° / 55°
0.19"
Fri
🌧️Rain showers
78° / 51°
0.49"
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: 461 CFS · BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Fall River conditions.
🪰 Hatch Calendar
Fall River · September · Early Fall
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
BWOs returning (size 18-20). Hoppers still effective. Mahogany Duns (size 16-18) late month. Fall colors along the Yellowstone Plateau spectacular.
River Map
About Fall River
Tributary of Henry's Fork flowing out of Yellowstone's Bechler region into Ashton Reservoir. Wild cutthroat, browns, and rainbows in a less-pressured setting just south of the Henry's Fork itself.
Regulations
Standard Idaho trout regulations apply on Fall River; rainbow trout are the primary species. Idaho fishing license required. Verify current regs at idfg.idaho.gov before fishing.
Learn More
Guides to help you fish Fall River with more confidence.
Idaho Fishing Regulations for Fly Anglers
Idaho's generous six-trout general limit — and the strict river-specific exceptions that override it. Licenses and the steelhead/salmon permits, bull…
Trout Species of Idaho
Idaho's six defining salmonids — the famous wild Henry's Fork rainbows, native westslope cutthroat of the St. Joe/Lochsa/Selway, federally threatened…
Silver Creek, Idaho: The West's Most Technical Spring Creek
Silver Creek near Picabo, Idaho is a spring creek of exceptional clarity and difficulty — flat, clear water with large, selective brown and rainbow…