River WA

West Fork Foss River

Washington • 47.5891, -121.3110

Hydrography profile Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

7 mi

12 km

Elevation

5,537′ → 1,533′

4,004 ft drop

Stream Order

Medium River

Slope

10.28%

542.6 ft/mi

Drainage

17 mi²

44 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

83 mi

133 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