Creek KS

Onion Creek

Kansas • 37.0425, -95.6825

Reviewed mapped path Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

54 mi

87 km

Elevation

1,224′ → 676′

548 ft drop

Stream Order

Medium River

Slope

0.19%

10.2 ft/mi

Drainage

114 mi²

295 km²

Avg Flow

-- cfs

0.9 mph velocity

Path to Mouth

633 mi

1,019 km to ocean

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