River IL AR

Illinois River

Illinois • 40.4697, -89.1384

Length

33 mi

52 km

Elevation

504′ → 460′

44 ft drop

Stream Order

9

Major River

Slope

0.03%

1.4 ft/mi

Drainage

7,942 mi²

20,570 km²

Avg Flow

-- cfs

3.0 mph velocity

Path to Mouth

744 mi

1,198 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

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