River SD

North Fork Moreau River

South Dakota • 45.2346, -103.1039

Hydrography profile Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

87 mi

140 km

Elevation

3,415′ → 2,541′

874 ft drop

Stream Order

Large River

Slope

0.19%

10.1 ft/mi

Drainage

393 mi²

1,017 km²

Avg Flow

-- cfs

1.4 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