Around here
Around South Fork Sangamon River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
South Fork Sangamon River is a 37.9 mile river. Streamflow is measured at the USGS gauge South Fork Sangamon River near Rochester, IL (site 05576000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1949 to 2026
South Fork Sangamon River typically runs highest in April, at a median 569 cfs, and lowest in October, at 14 cfs. The highest flow on record for any single day is 23,500 cfs, in 2016.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 227 | 25 to 767 |
| February | 330 | 68 to 1,130 |
| March | 510 | 237 to 1,180 |
| April | 569 | 301 to 1,395 |
| May | 496 | 222 to 1,420 |
| June | 427 | 161 to 1,045 |
| July | 131 | 51 to 334 |
| August | 36 | 8.8 to 161 |
| September | 17 | 4.9 to 59 |
| October | 14 | 3.6 to 99 |
| November | 58 | 10 to 226 |
| December | 118 | 17 to 532 |
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 77 years of record. Statistics published by the US Geological Survey for South Fork Sangamon River near Rochester, IL (site 05576000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of South Fork Sangamon River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Lake SangchrisLake SangchrisPublic
- Lake SangchrisLake SangchrisPublic
- Lake SangchrisLake SangchrisPublic
Made to print
Put South Fork Sangamon 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 South Fork Sangamon 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.
