River IL

Old Swan Pond Ditch

Illinois • 38.5461, -87.6301

Reviewed mapped path Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

5 km

Elevation

396′ → 392′

5 ft drop

Stream Order

Medium River

Slope

0.03%

1.6 ft/mi

Drainage

5 mi²

14 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

479 mi

770 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

Detailed hydrology

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