Around here
Around Rock River
Public land: USGS PAD-US
About this river
Rock River is a 62.0 mile river near Golden Boat Rentals and Boat Club in Wisconsin. Streamflow is measured at the USGS gauge Rock River at Horicon, WI (site 05424057). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1998 to 2025
Rock River typically runs highest in April, at a median 817 cfs, and lowest in October, at 81 cfs. The highest flow on record for any single day is 3,810 cfs, in 2008.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 149 | 88 to 242 |
| February | 178 | 56 to 383 |
| March | 733 | 393 to 1,110 |
| April | 817 | 516 to 1,235 |
| May | 508 | 265 to 861 |
| June | 381 | 167 to 649 |
| July | 133 | 50 to 463 |
| August | 88 | 41 to 207 |
| September | 83 | 32 to 189 |
| October | 81 | 45 to 165 |
| November | 174 | 81 to 309 |
| December | 172 | 93 to 293 |
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 27 years of record. Statistics published by the US Geological Survey for Rock River at Horicon, WI (site 05424057). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Rock River. Ramp data comes from the USGS national boat-ramp inventory.
- Martin ParkRock RiverPublic
- Machesney ParkRock RiverPublic
- Willow Creek - Rock Cut State Park - NorthPierce LakePublic
- Candlewick LakeCandlewick LakeRestricted
- Candlewick LakeCandlewick LakeRestricted
- Willow Creek - Rock Cut State Park - SouthPierce LakePublic
- Olson LakeOlson LakePublic
- Candlewick LakeCandlewick LakeRestricted
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Rock 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.
