River IL

Taff Branch

Illinois • 37.8158, -91.4199

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

4 mi

7 km

Elevation

1,087′ → 875′

213 ft drop

Stream Order

Stream

Slope

0.95%

50.3 ft/mi

Drainage

9 mi²

23 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

361 mi

581 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