Creek IL

Thompson Creek

Illinois • 37.2036, -91.2876

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

23 mi

36 km

Elevation

1,291′ → 252′

1,039 ft drop

Stream Order

Medium River

Slope

0.87%

46.0 ft/mi

Drainage

66 mi²

172 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

889 mi

1,430 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