Creek SD

Lost Creek

South Dakota • 42.7942, -100.2429

Reviewed mapped path Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

63 mi

101 km

Elevation

2,573′ → 1,712′

861 ft drop

Stream Order

Stream

Slope

0.26%

13.8 ft/mi

Drainage

37 mi²

95 km²

Avg Flow

-- cfs

0.7 mph velocity

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

Detailed hydrology

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Data from USGS & NOAA for informational purposes only. Read source and safety notes