About this river
Macoupin Creek is an 18.6 mile river near Alton Marina in Illinois. Streamflow is measured at the USGS gauge Macoupin Creek near Kane, IL (site 05587000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1921 to 2026
Macoupin Creek typically runs highest in April, at a median 330 cfs, and lowest in October, at 17 cfs. The highest flow on record for any single day is 38,100 cfs, in 2016.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 128 | 33 to 393 | |
| February | 222 | 89 to 620 | |
| March | 324 | 174 to 774 | |
| April | 330 | 159 to 880 | |
| May | 276 | 107 to 740 | |
| June | 158 | 57 to 460 | |
| July | 69 | 25 to 189 | |
| August | 33 | 16 to 98 | |
| September | 20 | 11 to 64 | |
| October | 17 | 8.2 to 75 | |
| November | 43 | 11 to 148 | |
| December | 88 | 16 to 285 |
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 98 years of record. Statistics published by the US Geological Survey for Macoupin Creek near Kane, IL (site 05587000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Macoupin Creek. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Macoupin Creek'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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