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Edwards River in Illinois

River62.1 mi
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Around here

Around Edwards River

Blanchard Island Recreation Area14.2 miPort Louisa National Wildlife Refuge9.2 mi10 mi

Data Source: Recreation.gov · 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

Edwards River is a 62.1 mile river. Streamflow is measured at the USGS gauge Edwards River near New Boston, IL (site 05466500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1935 to 2026

Edwards River typically runs highest in April, at a median 344 cfs, and lowest in October, at 41 cfs. The highest flow on record for any single day is 14,000 cfs, in 1973.

Show the numbers
Typical flow by month at Edwards River near New Boston, IL, in cfs
MonthTypical (cfs)Usual range (cfs)
January12041 to 276
February17481 to 363
March300170 to 561
April344187 to 644
May333163 to 649
June262122 to 567
July16184 to 307
August7038 to 139
September4424 to 98
October4124 to 140
November6734 to 190
December9634 to 214

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 92 years of record. Statistics published by the US Geological Survey for Edwards River near New Boston, IL (site 05466500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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