River CA

Estero de San Antonio

California • 38.2755, -122.9261

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

10 mi

17 km

Elevation

400′ → 2′

398 ft drop

Stream Order

Medium River

Slope

0.72%

38.2 ft/mi

Drainage

52 mi²

134 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

10 mi

16 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