Creek IL

Swan Creek

Illinois • 40.6808, -90.5163

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

31 mi

49 km

Elevation

770′ → 556′

214 ft drop

Stream Order

Medium River

Slope

0.13%

6.9 ft/mi

Drainage

100 mi²

258 km²

Avg Flow

-- cfs

0.9 mph velocity

Path to Mouth

1,437 mi

2,313 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