River SD

Little Moreau River

South Dakota • 45.3546, -101.1003

Hydrography profile Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

48 mi

77 km

Elevation

2,312′ → 1,687′

625 ft drop

Stream Order

Medium River

Slope

0.25%

13.0 ft/mi

Drainage

117 mi²

302 km²

Avg Flow

-- cfs

0.9 mph velocity

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