Creek SD

Gap Creek

South Dakota • 45.5119, -103.0501

Hydrography profile Updated Feb 1, 2026

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USGS and NOAA data is for informational purposes. Source notes

Length

33 mi

53 km

Elevation

3,276′ → 2,701′

575 ft drop

Stream Order

Medium River

Slope

0.33%

17.6 ft/mi

Drainage

68 mi²

176 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).

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

Rain Radar