San Antonio Reservoir near Sunol water level

Name: San Antonio Reservoir near Sunol water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Reservoir, San Antonio Reservoir, California, United States

Directions

Latest reading

Surface elevation

457.32ft Steady over the last 24 hours

Measured Oct 20, 2026, 09:30 AM PDT (1 hour ago)

History

7 days

Surface elevation

What this means

The latest lake level at San Antonio Reservoir near Sunol is 457.32 ft. The agency publishes no normal range or warning level for this reservoir yet, so there is nothing to judge the number against.

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 457.32 ft and 457.40 ft.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Swimming and boating at San Antonio Reservoir near Sunol

Without a published normal range, the trend is the most useful thing here: a steady lake means few changes at the shore.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

No rain in the last 3 days.

17 Sat 92° 60° – Wind 11 mph

18 Sun 76° 51° – Wind 12 mph

19 Mon 67° 49° – Wind 8 mph

20 Tue 67° 49° 0.01 in, 27% Wind 6 mph

21 Wed 69° 54° 0.46 in, 44% Wind 5 mph

22 Thu 65° 52° – Wind 6 mph

23 Fri 70° 51° – Wind 6 mph

Forecast: Open-Meteo

Sunrise 07:21 AM Sunset 06:25 PM Daylight 11 hr, 4 min Waxing gibbous 70%

Map

Other gauges on San Antonio Reservoir

Gauge	Level	Compared with normal	24 hours	Distance
San Antonio Reservoir near BradleyReservoir, San Antonio Reservoir	740.98 ft	No reference yet	−0.01 ft	134 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
San Antonio Creek near SunolRiver gauge, San Antonio Creek	0.0 cfs	Normal	±0	0.7 mi
Alameda Creek below Welch Creek near SunolRiver gauge, Alameda Creek	7.5 cfs	High	+0.4 cfs	2.1 mi
Arroyo De La Laguna A VeronaRiver gauge	0.75 ft	Below flood stage	±0	4.3 mi
Alameda Creek below Calaveras Creek near SunolRiver gauge, Alameda Creek	7.5 cfs	High	±0	4.8 mi
Calaveras Creek near SunolRiver gauge, Calaveras Creek	7.4 cfs	Normal	±0	5.0 mi
Arroyo Valle near LivermoreRiver gauge, Arroyo Valle	8.3 cfs	High	±0	6.1 mi
Alameda Creek below Diversion Dam near SunolRiver gauge, Alameda Creek	0.1 cfs	Normal	±0	6 mi
Alameda Creek near NilesRiver gauge, Alameda Creek	2.79 ft	Below flood stage	+0.02 ft	6 mi

Questions and answers

Is San Antonio Reservoir near Sunol really 457.32 ft deep?

No. 457.32 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of San Antonio Reservoir near Sunol today?

On Oct 20, 2026, 09:30 AM PDT, the surface elevation was 457.32 ft. Steady over the last 24 hours.

Is San Antonio Reservoir near Sunol rising or falling?

Steady over the last 24 hours.

Is the level of San Antonio Reservoir near Sunol normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:11173990 (Agency page)
Coordinates: 37.56997, -121.84871 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Surface elevation	457.32 ft	2026-10-20 16:30	Provisional

Download

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How to cite

U.S. Geological Survey: San Antonio Reservoir near Sunol (usgs:11173990). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/san-antonio-reservoir-near-sunol

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer