About this river
Sugar River is a 17.7 mile river near Rocktown Adventures of Rockford in Illinois. Streamflow is measured at the USGS gauge Sugar River near Brodhead, WI (site 05436500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1914 to 2026
Sugar River typically runs highest in March, at a median 446 cfs, and lowest in August, at 245 cfs. The highest flow on record for any single day is 10,800 cfs, in 1929.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 253 | 185 to 340 | |
| February | 275 | 198 to 408 | |
| March | 446 | 320 to 707 | |
| April | 406 | 292 to 577 | |
| May | 335 | 247 to 484 | |
| June | 303 | 222 to 484 | |
| July | 263 | 187 to 374 | |
| August | 245 | 173 to 339 | |
| September | 246 | 174 to 327 | |
| October | 258 | 190 to 353 | |
| November | 286 | 214 to 390 | |
| December | 260 | 195 to 365 |
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 112 years of record. Statistics published by the US Geological Survey for Sugar River near Brodhead, WI (site 05436500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Sugar 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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