River IL

Upper West Fork West Sabula Slough

Illinois • 42.1124, -90.1799

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

5 km

Elevation

589′ → 587′

2 ft drop

Stream Order

Major River

Slope

0.01%

0.6 ft/mi

Drainage

105,599 mi²

273,500 km²

Avg Flow

-- cfs

3.0 mph velocity

Path to Mouth

1,253 mi

2,016 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