Creek SD

West Branch Ash Creek

South Dakota • 44.8930, -101.6838

Hydrography profile Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

27 mi

44 km

Elevation

2,551′ → 2,111′

440 ft drop

Stream Order

Medium River

Slope

0.31%

16.2 ft/mi

Drainage

44 mi²

114 km²

Avg Flow

-- cfs

1.1 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