Around here
Around East Branch Rock River
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
East Branch Rock River is a 42.1 mile river. Streamflow is measured at the USGS gauge Rock River at Horicon, WI (site 05424057). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1998 to 2025
East Branch 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 East Branch Rock River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- River Bend ParkRock RiverPublic
- Legion Auxillary ParkRock RiverPublic
- Chestnut StreetRock RiverPublic
- North Nebraska StreetRock RiverPublic
- Upper Dam Mill PlaceEast Branch Rock River - Upper Mayville PondPublic
- GreenheadEast Branch Rock RiverPublic
- River Edge ParkEast Branch Rock RiverPublic
- North Pole RoadEast Branch Rock RiverPublic
Made to print
Put East Branch Rock River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show East Branch 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.
