South Fork Boise River: hatch chart + live conditions
Cold tailwater below Anderson Ranch Dam. Strong midge and PMD hatches. Bull trout present; handle carefully. Excellent year-round fishing with consistent flows.
Top 3 dry flies for September
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12-month hatch chart
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Frequently asked
What are the best months to fish the South Fork Boise River?
Best months: April, May, June, July, August, September, October.
What flies hatch on the South Fork Boise River in September?
Active hatches this month: trico, blue wing olive, caddis.
What species are in the South Fork Boise River?
Primary: rainbow trout, bull trout. Cold tailwater below Anderson Ranch Dam. Strong midge and PMD hatches. Bull trout present; handle carefully. Excellent year-round fishing with consistent flows.
Are there special fishing regulations on the South Fork Boise River?
No special-regulation section is listed here, so standard Idaho trout regulations apply. Check ID F&G before fishing.
How do I check live water conditions on the South Fork Boise River?
The live USGS reading is shown at the top of this page (site 13185000). It refreshes hourly.
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