Fly Fishing Stream Conditions Report: Boise River

Period:

Jul 2026May 2026Feb 2026Dec 2025Oct 2025Sep 2025

Report Summary for Jul 2026

This year: The Boise River is offering consistent fishing conditions on the In-Town stretch, with clear water and good overall flows. Further downstream near Middleton, flows are steady, averaging around 265 CFS, ranging between a minimum of 233 CFS and a maximum of 292 CFS. If you are planning a trip, be aware that float season is in full swing, which brings heavy recreational traffic and makes fishing from Barber Park to Ann Morrison Park a bit tricky. Nymphing remains the most productive approach to find success right now. Early in the day, target deeper holes and tail outs where trout are holding deep to pick off drifting bugs. As the sun gets high during the mid-day hours, adjust your focus and look for fish moving into shallower, faster water. We are seeing an excellent variety of bugs on the water, including caddis, midges, and pale morning duns, while grasshoppers are becoming thick along the grassy banks. To match the local forage, drift a Duracell Jig, Copper John, Purple Dart Jig, or a Chili Pepper Worm.

Best time of day: Morning

Prior years: No prior years report for this period.

This report combines publicly available data when available with our own analysis to give a comprehensive view of the stream conditions.

Duracell Jig fly pattern

Duracell Jig

Size: 16-18
nymph
Copper John fly pattern

Copper John

Size: 14-16
nymph
Chili Pepper Worm fly pattern

Chili Pepper Worm

Size: 18-20
worm

Monthly water conditions

Boise R near Middleton, ID

This month

239 CFS

Last month

1102 CFS

Access information

Barber Park to Ann Morrison Park is busy with floaters.

Hazards

• Float season is in full effect which makes fishing from Barber Park to Ann Morrison Park tricky. Recreational traffic.

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