Idaho Panhandle
St. Joe River
Live Conditions
St. Joe River — At Calder
7-Day Flow
→ Stable
24-Hr Pressure
27.9 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☀️Clear sky
75° / 52°
Tomorrow
🌤️Mainly clear
77° / 48°
Tue
☀️Clear sky
84° / 56°
Wed
☀️Clear sky
92° / 60°
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: 506 CFS · PMDs continue. HOPPER SEASON peak
What should I pack?
Rod, flies, tippet, and safety gear specific to today's St. Joe River conditions.
🪰 Hatch Calendar
St. Joe River · August · Late Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
PMDs continue. HOPPER SEASON peak (size 8-12) — St. Joe cutthroat hammer terrestrials. Caddis evenings. Single barbless hooks above Prospector Creek, all C&R for cutthroat. Best dry fly month.
River Map
About St. Joe River
Wild & Scenic freestone in the Idaho Panhandle flowing through the Coeur d'Alene Mountains. Catch-and-release waters above Prospector Creek hold native west-slope cutthroat in classic pocket water and pools.
Regulations
Catch-and-release for cutthroat above Prospector Creek with single barbless hook in many stretches. Bull trout federally protected — release immediately. Check current IDFG rules for seasonal updates.
Learn More
Guides to help you fish St. Joe 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…