San Andreas Lake A Water Level
California · updated daily from the U.S. Geological Survey
443.61 ft
San Andreas Lake A is current reading available and falling (-0.36 ft in the last 7 days).
Change since yesterday: -0.15 ft
Reading as of 2026-08-15
Where San Andreas Lake A sits historically
Today's level compared with every reading in our 0.3-year record for this lake.
Since yesterday
-0.15 ft
7-day change
-0.36 ft
30-day change
-0.32 ft
1-year change
— ft
Last 30 days
Last 12 months
San Andreas Lake A records and averages
| Current level | 443.61 ft |
|---|---|
| Record high | 444.33 ft (2026-05-07) |
| Record low | 442.88 ft (2026-04-28) |
| Average of all readings | 443.69 ft |
| Data span | 0.3 years (121 readings) |
Frequently asked questions
Is San Andreas Lake A full right now?
As of 2026-08-15, San Andreas Lake A sits at 443.61 ft, which is current reading available.Over the past 30 days the level has fallen 0.32 ft.
What is the water level at San Andreas Lake A today?
The most recent reading is 443.61 ft (2026-08-15), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest San Andreas Lake A has ever been?
The highest level in our records is 444.33 ft on 2026-05-07. The lowest is 442.88 ft on 2026-04-28. Our record covers about 0.3 years of readings.
Why is San Andreas Lake A low right now?
Reservoir levels move for four main reasons: rainfall and runoff into the basin, releases through the dam for downstream water supply, power generation or flood control, evaporation during hot months, and seasonal drawdown schedules set by the operating agency. San Andreas Lake A has fallen 0.32 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has San Andreas Lake A changed over the past year?
Year-over-year comparison is not available for this lake yet. The full-history chart above covers 0.3 years, with a record high of 444.33 ft and a record low of 442.88 ft.
Nearby lakes in California
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All California lake levels.