About this river
Bois Brule River is an 18.9 mile stream near Brule River Canoe Rental, Inc. in Wisconsin. Streamflow is measured at the USGS gauge Bois Brule River at Brule, WI (site 04025500). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1943 to 2026
Bois Brule River typically runs highest in April, at a median 255 cfs, and lowest in January, at 130 cfs. The highest flow on record for any single day is 1,700 cfs, in 2001.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 130 | 123 to 144 | |
| February | 130 | 122 to 143 | |
| March | 140 | 129 to 158 | |
| April | 255 | 202 to 329 | |
| May | 201 | 166 to 249 | |
| June | 165 | 141 to 210 | |
| July | 143 | 126 to 171 | |
| August | 132 | 119 to 155 | |
| September | 138 | 123 to 166 | |
| October | 146 | 131 to 174 | |
| November | 152 | 136 to 173 | |
| December | 140 | 130 to 154 |
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 81 years of record. Statistics published by the US Geological Survey for Bois Brule River at Brule, WI (site 04025500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Bois Brule River. Ramp data comes from the USGS national boat-ramp inventory.
- Bois Brule River (Mouth)Lake SuperiorPublic
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