About this river
Boise River is a 2.0 mile river near Idaho River Sports in Idaho. Streamflow is measured at the USGS gauge Boise River at Glenwood Bridge near Boise ID (site 13206000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1982 to 2026
Boise River typically runs highest in May, at a median 1,450 cfs, and lowest in November, at 257 cfs. The highest flow on record for any single day is 9,560 cfs, in 1983.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 265 | 219 to 290 | |
| February | 274 | 219 to 317 | |
| March | 283 | 232 to 2,000 | |
| April | 1,020 | 595 to 5,120 | |
| May | 1,450 | 826 to 4,970 | |
| June | 1,330 | 842 to 2,925 | |
| July | 1,110 | 816 to 1,310 | |
| August | 797 | 721 to 1,120 | |
| September | 586 | 515 to 687 | |
| October | 275 | 229 to 338 | |
| November | 257 | 207 to 271 | |
| December | 261 | 230 to 274 |
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 44 years of record. Statistics published by the US Geological Survey for Boise River at Glenwood Bridge near Boise ID (site 13206000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
