River IL

Flat Branch

Illinois • 38.7135, -89.3774

Length

38 mi

61 km

Elevation

708′ → 568′

140 ft drop

Stream Order

6

Large River

Slope

0.07%

3.7 ft/mi

Drainage

275 mi²

711 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

1,469 mi

2,364 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

Monitor