Boise / Mountain Home
South Fork Boise River
Live Conditions
South Fork Boise River — Near Anderson Ranch Dam
7-Day Flow
↓ Falling
24-Hr Pressure
26.27 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☀️Clear sky
83° / 56°
Tomorrow
☀️Clear sky
88° / 58°
Wed
☁️Overcast
94° / 66°
Thu
☀️Clear sky
102° / 70°
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: 358 CFS · Pink Alberts continue
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 · August · Late Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
Pink Alberts continue (size 14-16). Caddis evenings. Hoppers (size 8-12) productive. Higher irrigation flows still in effect. Selective rainbows in the canyon.
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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