As of September 11, 2026, the South Fork Boise River is fishing Great (8.0/10): flows are 157 cfs, Flavs activity, reported by 1 shop.
Last updated
Reports indicate good conditions. flow at 162 cfs.
Conditions are holding steady since the previous update.
Mountain tailwater with trophy potential. Barbless-only above Neal Bridge.
A quick view of the latest report, gauge, hatch, and fly data available for this water. Missing observations are left unreported rather than estimated.
Current reports mention Flavs, Pink Alberts, Baetis. Recommended flies include Pink Alberts, Blue Wing Olive, Flavs, Zebra Midge.
Access and seasonal rules can change. Check current regulations and closures with Idaho Fish and Game ↗
South Fork Boise River location
43.4958, -115.3081
Current Flow
157cfs
| Insect | Stage | Timing |
|---|---|---|
| Flavs | adult | midday |
| Pink Alberts | adult | midday |
| Baetis | adult | afternoon |
| Caddis | adult | afternoon |
| Cranefly | adult | — |
| Pink Albert | adult | afternoon |
| Flav | — | afternoon |
| Crane Fly | adult | — |
| PMD | — | — |
Keep exploring
Current options in Idaho.
Great · Updated 1d ago
Fair · Updated 1d ago
Fair · Updated 1d ago
Fair · Updated 1d ago
Silver Creek Outfitters
Flows at 600 cfs favor wading over floating. A few Flavs and Pink Alberts are hatching midday through early afternoon, with Baetis beginning to appear especially on cloudy days.
Silver Creek Outfitters
Flows holding around 800 CFS with floating still possible; a few Flavs and Pink Alberts hatching midday through early afternoon, Baetis emerging especially on cloudy days, and caddis present in late afternoons as a good searching pattern with a nymph dropper.
Silver Creek Outfitters
Flows holding around 800 CFS with the floating season winding down as flows are expected to drop to 600 and then 300 CFS through September. Pinks, Baetis, caddis, craneflies, and terrestrials are all present.
Silver Creek Outfitters
Flows have dropped to 800 CFS (reported at 814 CFS). Hatch activity has been sparse, but Pink Alberts are present in the afternoon along with caddis early and late; hoppers are also turning fish.
Silver Creek Outfitters
Flows have dropped to around 1150 CFS; fishing from a drift boat is still the best option with limited wade access along the roadside. Hoppers with a nymph trailer work well along the banks, with Pink Alberts and Flavs expected in the afternoon.
Silver Creek Outfitters
Flows are at 1570-1580 cfs, perfect for floating with some wade fishing opportunities. Caddis, Pink Alberts, Flavs, and crane flies are hatching throughout the day, and hoppers with small droppers are also taking fish.
Silver Creek Outfitters
Flows are at 1570 CFS, perfect for floating with some wade fishing opportunities. Caddis, Pink Alberts, Flavs, and crane flies hatch throughout the day, and hoppers with small droppers are also taking fish.
Silver Creek Outfitters
Flows at 1570 cfs are perfect for floating with some wade fishing opportunities. Caddis, Pink Alberts, Flavs, and crane flies are hatching throughout the day, and hoppers with small droppers are taking fish.
Silver Creek Outfitters
Flows remain high at 1500-1570 CFS making drifting the best option with limited wade access along the roadside. Pink Alberts are hatching in the afternoon and caddis are thick in the evening.
Silver Creek Outfitters
Salmon flies are done but big foam bugs with a dropper are still effective when floating the banks. Pink Alberts, Caddis, and nymphing the riffles and seams are all productive for trout and whitefish.
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