HookedFishing

Boise River, Idaho

Boise River through Boise: Greenbelt access to wild browns, stocked rainbows and a November steelhead release

Discharge

333

cfs

27 min ago

Water temp

—

not measured here

Gage height

3.51

ft

Ideal flow

300-1,200 cfs

published range

Seven-day mean discharge · 329–422 cfs

Hatching now · October

Midge, Blue-Winged Olive at peak

  • Midge

    PEAK
    • Zebra Midge #20-24
    • Mercury Midge #22
  • Blue-Winged Olive

    PEAK
    • RS2 #18-20
    • Parachute Adams #18-20

Angler reports

No reports on the Boise River yet

File a report

Reports filed here are stamped with the gauge reading at the moment they are published, so the first one sets the record for what 333 cfs fished like.

Hatch chart

Twelve months on the Boise River

Month-by-month insect activity for the Boise River
InsectJFMAMJJASOND
MidgeJanuary: peakFebruary: peakMarch: peakApril: peakMay: onJune: offJuly: offAugust: offSeptember: onOctober: peakNovember: peakDecember: peak
Blue-Winged OliveJanuary: onFebruary: onMarch: peakApril: peakMay: onJune: offJuly: offAugust: offSeptember: onOctober: peakNovember: peakDecember: on
Mother's Day CaddisJanuary: offFebruary: offMarch: offApril: onMay: peakJune: onJuly: offAugust: offSeptember: offOctober: offNovember: offDecember: off
Caddis (general)January: offFebruary: offMarch: offApril: onMay: peakJune: peakJuly: peakAugust: onSeptember: offOctober: offNovember: offDecember: off
Pale Morning DunJanuary: offFebruary: offMarch: offApril: offMay: onJune: peakJuly: peakAugust: onSeptember: offOctober: offNovember: offDecember: off
TricoJanuary: offFebruary: offMarch: offApril: offMay: offJune: onJuly: peakAugust: peakSeptember: onOctober: offNovember: offDecember: off
PeakActiveOff

Not yet verified

No published hatch calendar was found for this water, so this chart has only been checked for biological consistency. Treat the timing as a starting point and file a report if you know better.

The water

Sections and species

Barber Park and the upper town reach

The river the town fishes is the lower Boise below Lucky Peak Dam. Diversion Dam sits a few miles up the canyon and Barber Dam is the last structure before the city; Barber Park, on the east edge of Boise just below Barber Dam, is the practical top of the Greenbelt water and the main put-in for tubers and floaters in summer. The reach from here down past the Parkcenter bridges has the coldest water and the most structure.

Downtown Greenbelt

The paved Boise River Greenbelt follows both banks through town, so Julia Davis Park, Ann Morrison Park, the Boise State footbridge and the Americana and Main Street bridges are all a short walk or ride from parking. Idaho Fish and Game stocks catchable rainbows in the reach from Barber Dam down to Strawberry Glen through the season, and the state releases a few hundred adult hatchery steelhead at bridges in this stretch each November.

Veterans Memorial Park to Glenwood and below

Veterans Memorial Park and the Glenwood Bridge, where the USGS gauge on this page sits, mark the lower end of the town water. Below Glenwood the river runs through Garden City and Eagle toward Middleton, with fewer access points, more diversions and a second stocking reach from Middleton to Eagle Road.

Brown trout

Browns are the wild fish of the town stretch and the ones local anglers chase with streamers, crayfish and sculpin patterns once flows drop in the fall. They spawn in October and November, so avoid wading the shallow riffles and gravel bars then. The Mother's Day caddis in early May and the fall baetis are their best surface windows.

Rainbow trout and steelhead

Rainbows are a mix of hatchery plants and holdover fish. Idaho Fish and Game's 2026 stocking reports show catchable rainbows going into the Strawberry Glen to Barber Dam reach in summer, with more plants upstream in the canyon above the reservoirs. Hatchery steelhead, trapped at Hells Canyon Dam, have been released in the town reach every year since 1998; they are adipose-clipped, need a steelhead permit to keep, and are defined as any clipped rainbow over 20 inches.

Season and regulations

The lower Boise is open year-round. From the downstream side of the East Parkcenter Bridge to the upstream side of the West Parkcenter Bridge the trout limit is 2, none under 14 inches; elsewhere on the lower river the Southwest Region general limit of 6 trout applies. Boise River steelhead limits are 2 per day, 6 in possession and 20 for the fall season, with a permit required; barbless hooks are not required for them here.

Flow swings hard: the Bureau of Reclamation runs high releases for irrigation and flood control from spring into July, and Idaho Angler warns that wading is dangerous when the town reach passes 2,000 cfs, with local guides putting the wading ceiling closer to 1,300 cfs. Flows drop to a few hundred cfs from August through winter, which is the wade-fishing season. Check the current Idaho Fish and Game rules before you go.

Facts checked against

Corrected Barber Park's location (below Barber Dam, not at Diversion Dam), removed the invented 14-20 inch brown average and 24 inch claims and the '15+ miles' figure, and made rainbows the primary species with their hatchery origin stated. Added the November steelhead program, the Parkcenter special-regulation reach and the Southwest Region limits. Ideal flow narrowed from 200-2,000 to 300-1,200 cfs at Glenwood.