Boise River in Idaho
Around here
Around Boise River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this river
Boise River is a 62.1 mile river. Streamflow is measured at the USGS gauge Boise R near Middleton, ID (site 13210045). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2023 to 2026
Boise River typically runs highest in March, at a median 398 cfs, and lowest in September, at 257 cfs. The highest flow on record for any single day is 4,850 cfs, in 2025.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 357 | 336 to 372 |
| February | 379 | 350 to 440 |
| March | 398 | 370 to 480 |
| September | 257 | 241 to 279 |
| October | 300 | 262 to 331 |
| November | 337 | 326 to 345 |
| December | 345 | 332 to 363 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 3 years of record. Statistics published by the US Geological Survey for Boise R near Middleton, ID (site 13210045). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
4 mapped launches sit in the mapped area of Boise River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Marsing Island ParkSnake RiverPublic
- Lake Lowell Visitor CenterLake LowellPublic
- Homedale River ParkSnake RiverPublic
- Redtop PondRedtop PondPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Boise River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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