Boise / Mountain Home
South Fork Boise River
Live Conditions
South Fork Boise River — Near Anderson Ranch Dam
7-Day Flow
→ Stable
24-Hr Pressure
26.24 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
77° / 52°
Tomorrow
🌤️Partly cloudy
74° / 56°
Wed
☁️Overcast
71° / 45°
Thu
☁️Overcast
68° / 56°
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?
One call. Specific to today's exact conditions on the South Fork Boise River.
2
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 · May · Late Spring
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
BWOs continue. Caddis (size 14-16) heavy. Anderson Ranch releases increase for irrigation — flows often climb to 1,500+ CFS by late month. Float fishing productive at higher releases.
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.