River IL

Vandalia Ditch

Illinois • 38.9374, -89.0844

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

2 mi

3 km

Elevation

467′ → 458′

9 ft drop

Stream Order

Medium River

Slope

0.10%

5.2 ft/mi

Drainage

54 mi²

141 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

266 mi

428 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