Creek IL

South Branch Little Piasa Creek

Illinois • 38.9883, -90.2208

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

4 mi

7 km

Elevation

631′ → 452′

179 ft drop

Stream Order

Medium River

Slope

0.80%

42.0 ft/mi

Drainage

5 mi²

13 km²

Avg Flow

-- cfs

0.9 mph velocity

Path to Mouth

425 mi

684 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