FloatETA estimates how long this float actually takes from live discharge at USGS 13206000 (Boise River at Glenwood Bridge nr Boise), not a guidebook average. At a typical 1,400 cfs, a raft drifts about 2.4 mph here. Higher flow speeds you up; skinny water slows you down. Kayaks run faster than the current, tubes slower. Optional fishing adds 35 minutes per mile.
The Boise River (Greenbelt) listing covers 14 river miles across 2 access-to-access stretches (Class I). Times in the table are typical raft hours at that reference flow. Open the live calculator for today's CFS, sunset take-out, water temperature, and rain/UV at the put-in.
See today's Boise River (Greenbelt) float time
Float stretches on the Boise River (Greenbelt)
| Put-in → take-out | Miles | Difficulty | Typical raft time | Notes |
|---|---|---|---|---|
| Barber Park → Ann Morrison Park | 6 mi | Class I | ~2 hr 30 min | The classic Boise float. About 2–3 hours in a tube. Glass is banned. Ada County shuttle in season. |
| Ann Morrison Park → Eagle Island | 8 mi | Class I | ~3 hr 20 min | Quieter miles west of downtown. Watch for diversion structures and the south channel split. |
How we time this river
Speed scales with discharge using hydraulic geometry v ∝ Q0.34, calibrated to this gauge. That is why a 1,000 cfs afternoon is a different day than 3,000 cfs runoff. Always scout, wear a PFD, and check Idaho Fish and Game for closures. Gauge page: USGS 13206000.
Common questions
How long does it take to float Barber Park to Ann Morrison Park on the Boise River (Greenbelt)?
About 2 hr 30 min in a raft at a typical 1400 cfs. Kayaks run a bit faster; tubes run slower. Stopping to fish adds about 35 minutes per mile. The classic Boise float. About 2–3 hours in a tube. Glass is banned. Ada County shuttle in season.
How long does it take to float Ann Morrison Park to Eagle Island on the Boise River (Greenbelt)?
About 3 hr 20 min in a raft at a typical 1400 cfs. Kayaks run a bit faster; tubes run slower. Stopping to fish adds about 35 minutes per mile. Quieter miles west of downtown. Watch for diversion structures and the south channel split.
What USGS gauge is used for Boise River (Greenbelt) float times?
FloatETA uses USGS gauge 13206000 (Boise River at Glenwood Bridge nr Boise) for live discharge. Speed is scaled from a reference 1400 cfs drift of about 2.4 mph.
Is the Boise River (Greenbelt) a good tube float?
Tubes lag the current (we use a 0.72× speed multiplier). On Class I–II stretches tubes can work at moderate flows; skip high water and always wear a PFD.