River WA

West Branch Elk River

Washington • 46.7971, -123.9786

Hydrography profile Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

5 mi

8 km

Elevation

390′ → 16′

375 ft drop

Stream Order

Medium River

Slope

1.44%

76.1 ft/mi

Drainage

4 mi²

11 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

19 mi

30 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