River CA

East Branch South Fork Eel River

California • 40.0219, -123.7077

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

21 mi

34 km

Elevation

1,790′ → 353′

1,437 ft drop

Stream Order

Large River

Slope

1.27%

67.2 ft/mi

Drainage

76 mi²

197 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

102 mi

164 km to ocean

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