River IA

Welshs Slough

Iowa • 42.4277, -94.4268

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

1,185′ → 1,134′

51 ft drop

Stream Order

Stream

Slope

0.08%

4.4 ft/mi

Drainage

23 mi²

61 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

2,773 mi

4,463 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