EL CAPITAN Reservoir Water Level
California · updated daily from the U.S. Geological Survey
639.05 ft
EL CAPITAN Reservoir is current reading available and steady (-0.12 ft in the last 7 days).
Change since yesterday: -0.01 ft
Reading as of 2026-08-15
Where EL CAPITAN Reservoir sits historically
Today's level compared with every reading in our 0.3-year record for this lake.
Since yesterday
-0.01 ft
7-day change
-0.12 ft
30-day change
-0.54 ft
1-year change
— ft
Last 30 days
Last 12 months
EL CAPITAN Reservoir records and averages
| Current level | 639.05 ft |
|---|---|
| Record high | 645.35 ft (2026-04-29) |
| Record low | 639.05 ft (2026-08-15) |
| Average of all readings | 640.4 ft |
| Data span | 0.3 years (109 readings) |
Frequently asked questions
Is EL CAPITAN Reservoir full right now?
As of 2026-08-15, EL CAPITAN Reservoir sits at 639.05 ft, which is current reading available.Over the past 30 days the level has fallen 0.54 ft.
What is the water level at EL CAPITAN Reservoir today?
The most recent reading is 639.05 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 EL CAPITAN Reservoir has ever been?
The highest level in our records is 645.35 ft on 2026-04-29. The lowest is 639.05 ft on 2026-08-15. Our record covers about 0.3 years of readings.
Why is EL CAPITAN Reservoir changing 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. EL CAPITAN Reservoir has fallen 0.54 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has EL CAPITAN Reservoir 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 645.35 ft and a record low of 639.05 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.