San Antonio Reservoir level history
In the 367 days we have on record (Nov 3, 2025 to Nov 4, 2026), the highest level was 463.51 ft on Nov 20, 2025 and the lowest was 454.54 ft on Nov 2, 2026.
San Antonio Reservoir (Alameda County) Water Level Today
Current elevation 454.54 ft
No change in 24 h▼ 0.05 ft in 7 days
As of Nov 4, 2026, 5:30 AM PST, San Antonio Reservoir is at 454.54 ft. The level has fallen 0.05 ft over the last 7 days.
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San Antonio Reservoir level history
Level
| Date | Elevation | Daily change | Storage |
|---|---|---|---|
| Nov 4, 2026 | 454.54 ft | 0.00 ft | — |
| Nov 3, 2026 | 454.54 ft | 0.00 ft | — |
| Nov 2, 2026 | 454.54 ft | −0.01 ft | — |
| Nov 1, 2026 | 454.55 ft | −0.01 ft | — |
| Oct 31, 2026 | 454.56 ft | −0.01 ft | — |
| Oct 30, 2026 | 454.57 ft | −0.01 ft | — |
| Oct 29, 2026 | 454.58 ft | −0.01 ft | — |
| Oct 28, 2026 | 454.59 ft | −0.01 ft | — |
| Oct 27, 2026 | 454.60 ft | −0.02 ft | — |
| Oct 26, 2026 | 454.62 ft | −0.01 ft | — |
| Oct 25, 2026 | 454.63 ft | −0.01 ft | — |
| Oct 24, 2026 | 454.64 ft | −0.02 ft | — |
| Oct 23, 2026 | 454.66 ft | −0.01 ft | — |
| Oct 22, 2026 | 454.67 ft | +0.01 ft | — |
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Lakes near San Antonio Reservoir
Calaveras Reservoir 5.6 mi · 721.17 ft Del Valle Reservoir 6.4 mi · 684.20 ft Lower Crystal Springs Reservoir 28 mi · 272.81 ft Pilarcitos Lake 31 mi · 676.39 ft San Andreas Lake 32 mi · 444.13 ft Farmington Reservoir 55 mi · 117.09 ft
All California lake levels FAQ
What is the San Antonio Reservoir water level today?
454.54 ft as of Nov 4, 2026, 5:30 AM PST, reported by the U.S. Geological Survey.
How often is this page updated?
Every 3 hours. The gauge reports several times a day.
What is the highest and lowest level of San Antonio Reservoir?
In the period we have (since Nov 3, 2025): 463.51 ft and 454.54 ft.
Data: U.S. Geological Survey, gauge 11173990 (official page). Provisional data, subject to revision. For information only. Not for navigation or flood safety decisions. Check the official source. LakeLevelHQ is not affiliated with any government agency.