River CA

North Fork South Fork Noyo River

California • 39.4039, -123.6282

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

8 mi

13 km

Elevation

1,036′ → 102′

934 ft drop

Stream Order

Medium River

Slope

2.14%

112.9 ft/mi

Drainage

10 mi²

26 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

19 mi

31 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