River AR IL

Illinois River

Arkansas • 36.1447, -94.4947

Length

141 mi

226 km

Elevation

1,607′ → 459′

1,148 ft drop

Stream Order

9

Major River

Slope

0.15%

8.2 ft/mi

Drainage

27,507 mi²

71,243 km²

Avg Flow

-- cfs

3.0 mph velocity

Path to Mouth

451 mi

726 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

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