River CA

Laguna de Santa Rosa

California • 38.3967, -122.7968

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

17 mi

27 km

Elevation

254′ → 48′

206 ft drop

Stream Order

Large River

Slope

0.23%

12.3 ft/mi

Drainage

216 mi²

560 km²

Avg Flow

-- cfs

1.4 mph velocity

Path to Mouth

46 mi

74 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