River CA

Santa Ana River

California • 33.9680, -117.5188

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

92 mi

148 km

Elevation

6,971′ → 31′

6,940 ft drop

Stream Order

Large River

Slope

1.43%

75.4 ft/mi

Drainage

1,421 mi²

3,680 km²

Avg Flow

679 cfs

2.0 mph velocity

Classification

Terminal

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