River IL

Andalusia Slough

Illinois • 41.4425, -90.7744

Length

12 mi

20 km

Elevation

554′ → 545′

10 ft drop

Stream Order

9

Major River

Slope

0.01%

0.8 ft/mi

Drainage

196,481 mi²

508,883 km²

Avg Flow

-- cfs

3.0 mph velocity

Path to Mouth

1,020 mi

1,641 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

EPA WQP MyWaterway

Data from USGS & NOAA for informational purposes only. More