About this river
Wisconsin River is a 54.7 mile river near Hawk's Nest Outfitters in Wisconsin. Streamflow is measured at the USGS gauge Wisconsin River @ Rainbow Lake near Lake Tomahawk,wi (site 05391000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1936 to 2026
Wisconsin River typically runs highest in January, at a median 807 cfs, and lowest in April, at 329 cfs. The highest flow on record for any single day is 3,140 cfs, in 2018.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 807 | 675 to 951 | |
| February | 781 | 637 to 907 | |
| March | 625 | 462 to 750 | |
| April | 329 | 270 to 420 | |
| May | 620 | 365 to 951 | |
| June | 627 | 448 to 817 | |
| July | 583 | 457 to 756 | |
| August | 543 | 411 to 666 | |
| September | 515 | 393 to 710 | |
| October | 561 | 407 to 757 | |
| November | 638 | 459 to 847 | |
| December | 771 | 619 to 918 |
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 90 years of record. Statistics published by the US Geological Survey for Wisconsin River @ Rainbow Lake near Lake Tomahawk,wi (site 05391000). 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 Wisconsin 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.
