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South Fork Bear Creek in Illinois

River23.8 mi
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Around here

Around South Fork Bear Creek

5 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this river

South Fork Bear Creek is a 23.8 mile river. Streamflow is measured at the USGS gauge Bear Creek near Marcelline, IL (site 05495500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1944 to 2026

South Fork Bear Creek typically runs highest in April, at a median 102 cfs, and lowest in September, at 4.9 cfs. The highest flow on record for any single day is 27,000 cfs, in 2013.

Show the numbers
Typical flow by month at Bear Creek near Marcelline, IL, in cfs
MonthTypical (cfs)Usual range (cfs)
January206.0 to 60
February4212 to 168
March9241 to 270
April10244 to 273
May7028 to 214
June348.6 to 147
July154.2 to 64
August7.42.2 to 33
September4.91.2 to 20
October5.31.3 to 28
November9.32.9 to 53
December153.7 to 62

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 82 years of record. Statistics published by the US Geological Survey for Bear Creek near Marcelline, IL (site 05495500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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