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Bonpas Creek in Illinois

River48.7 mi
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Around here

Around Bonpas Creek

Grand Rapids15.6 mi5 mi

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Source: USGS GNIS · Public land: USGS PAD-US

About this river

Bonpas Creek is a 48.7 mile river. Streamflow is measured at the USGS gauge Bonpas Creek at Browns, IL (site 03378000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1941 to 2026

Bonpas Creek typically runs highest in March, at a median 132 cfs, and lowest in September, at 0.8 cfs. The highest flow on record for any single day is 7,410 cfs, in 1961.

Show the numbers
Typical flow by month at Bonpas Creek at Browns, IL, in cfs
MonthTypical (cfs)Usual range (cfs)
January5213 to 432
February8423 to 488
March13246 to 706
April9132 to 547
May4817 to 292
June185.0 to 121
July6.91.7 to 42
August2.10.3 to 14
September0.80.1 to 5.5
October1.20.0 to 7.6
November9.00.8 to 60
December294.5 to 234

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 86 years of record. Statistics published by the US Geological Survey for Bonpas Creek at Browns, IL (site 03378000). 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 Bonpas Creek. Ramp data comes from the USGS national boat-ramp inventory.

  • GrayvilleWabash RiverPublic

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