Boise / Mountain Home
South Fork Boise River
Live Conditions
South Fork Boise River — Near Anderson Ranch Dam
7-Day Flow
→ Stable
24-Hr Pressure
26.42 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌤️Partly cloudy
84° / 56°
Tomorrow
☁️Overcast
83° / 68°
Fri
🌦️Drizzle
73° / 59°
0.02"
Sat
☁️Overcast
68° / 53°
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.
6
Time of Day
Using: 286 CFS · BWOs returning
What should I pack?
Rod, flies, tippet, and safety gear specific to today's South Fork Boise River conditions.
🪰 Hatch Calendar
South Fork Boise River · September · Early Fall
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
BWOs returning (size 18-20). Pink Alberts tapering. Mahogany Duns (size 16-18) late month. Anderson Ranch releases beginning to drop — wading easier. Excellent fall fishing.
River Map
About South Fork Boise River
Cold tailwater below Anderson Ranch Dam in the Boise National Forest. Heavy hatches and consistent flows produce excellent rainbow and brown trout fishing in a remote canyon — famous for the Pink Albert (PMD) hatch.
Regulations
Catch-and-release only for rainbow trout below Anderson Ranch Dam, with artificial lures only in the special-regs section. Idaho fishing license required. Verify current regs at idfg.idaho.gov before fishing.
Learn More
Guides to help you fish South Fork Boise River with more confidence.
Idaho Fishing Regulations for Fly Anglers
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Trout Species of Idaho
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Silver Creek, Idaho: The West's Most Technical Spring Creek
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