Stream IL

Swab Run

Illinois • 40.8273, -89.9921

Hydrography profile Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

12 mi

19 km

Elevation

730′ → 580′

150 ft drop

Stream Order

Medium River

Slope

0.25%

13.0 ft/mi

Drainage

18 mi²

47 km²

Avg Flow

-- cfs

0.9 mph velocity

Path to Mouth

1,423 mi

2,290 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

Data from USGS & NOAA for informational purposes only. More