Creek IL

South Fork Otter Creek

Illinois • 39.0321, -90.4173

Reviewed mapped path Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

9 mi

14 km

Elevation

700′ → 463′

237 ft drop

Stream Order

Medium River

Slope

0.50%

26.6 ft/mi

Drainage

24 mi²

63 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

1,232 mi

1,982 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

Loading the interactive map…

Data from USGS & NOAA for informational purposes only. Read source and safety notes

Rain Radar