San Antonio Reservoir Water Level Today

Current elevation 737.67 ft

No change in 24 h▼ 0.07 ft in 7 days

Reported Nov 4, 2026, 3:45 AM PST · Elevation above NGVD 1929 · U.S. Geological Survey, gauge 11150100 · Provisional data

As of Nov 4, 2026, 3:45 AM PST, San Antonio Reservoir is at 737.67 ft. The level has fallen 0.07 ft over the last 7 days.

San Antonio Reservoir level history

Level

Last 14 days
Date	Elevation	Daily change	Storage
Nov 4, 2026	737.67 ft	0.00 ft	—
Nov 3, 2026	737.67 ft	0.00 ft	—
Nov 2, 2026	737.67 ft	−0.02 ft	—
Nov 1, 2026	737.69 ft	−0.01 ft	—
Oct 31, 2026	737.70 ft	−0.02 ft	—
Oct 30, 2026	737.72 ft	+0.02 ft	—
Oct 29, 2026	737.70 ft	−0.04 ft	—
Oct 28, 2026	737.74 ft	0.00 ft	—
Oct 27, 2026	737.74 ft	−0.02 ft	—
Oct 26, 2026	737.76 ft	−0.01 ft	—
Oct 25, 2026	737.77 ft	−0.02 ft	—
Oct 24, 2026	737.79 ft	−0.01 ft	—
Oct 23, 2026	737.80 ft	−0.02 ft	—
Oct 22, 2026	737.82 ft	+0.01 ft	—

San Antonio Reservoir level history

In the 367 days we have on record (Nov 3, 2025 to Nov 4, 2026), the highest level was 754.35 ft on Apr 27, 2026 and the lowest was 737.67 ft on Nov 2, 2026.

Lakes near San Antonio Reservoir

Nacimiento Reservoir 2.7 mi · 741.28 ft Alisal Reservoir 96 mi · 596.74 ft Cachuma Lake 98 mi · 742.08 ft Hensley Lake / Hidden Lake 106 mi · 453.79 ft Millerton Lake 106 mi · 503.57 ft Eastman Lake / Buchanan Lake 110 mi · 466.13 ft

All California lake levels

FAQ

What is the San Antonio Reservoir water level today?

737.67 ft as of Nov 4, 2026, 3:45 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): 754.35 ft and 737.67 ft.

Data: U.S. Geological Survey, gauge 11150100 (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.