River MN SD

West Fork Vermillion River

Minnesota • 43.4156, -97.2052

Hydrography profile Updated Dec 26, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

108 mi

174 km

Elevation

1,603′ → 1,292′

311 ft drop

Stream Order

Medium River

Slope

0.05%

2.9 ft/mi

Drainage

277 mi²

719 km²

Avg Flow

37 cfs

1.8 mph velocity

Path to Mouth

4,176 mi

6,720 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