San Andreas Lake A Dam Near Millbrae Ca
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Current conditions
Historical trends
USGS does not publish daily history for Elevation (NAVD 1988) and Elevation (NGVD 1929). Use 30 Days or shorter for continuous readings; other measurements may still have 1 Year / 3 Years charts.
USGS is missing data that would fill a gap in this station's recent readings. The hashed stretch on the chart is a real outage, not a hole in our archive. We'll check USGS again September 25, 2026 at 12:50:00 AM PDT.
Estimated daily mean from continuous data (USGS daily unavailable).
Data courtesy of the U.S. Geological Survey.