River IL

Pond Flat Ditch

Illinois • 38.1417, -87.5966

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

4 mi

6 km

Elevation

422′ → 411′

12 ft drop

Stream Order

Large River

Slope

0.06%

2.9 ft/mi

Drainage

20 mi²

51 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

441 mi

710 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

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Data from USGS & NOAA for informational purposes only. Read source and safety notes

Rain Radar