Creek OR

Olalla Creek

Oregon • 42.9700, -123.5978

Hydrography profile Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

22 mi

35 km

Elevation

3,257′ → 8′

3,249 ft drop

Stream Order

Large River

Slope

2.80%

147.7 ft/mi

Drainage

75 mi²

195 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

164 mi

264 km to ocean

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