HETCH HETCHY Reservoir A HETCH HETCHY CA Water Level
California · updated daily from the U.S. Geological Survey
3788.41 ft
HETCH HETCHY Reservoir A HETCH HETCHY CA is current reading available and falling (-3.10 ft in the last 7 days).
Change since yesterday: -0.39 ft
Reading as of 2026-08-15
Where HETCH HETCHY Reservoir A HETCH HETCHY CA sits historically
Today's level compared with every reading in our 0.3-year record for this lake.
Since yesterday
-0.39 ft
7-day change
-3.10 ft
30-day change
-12.24 ft
1-year change
— ft
Last 30 days
Last 12 months
HETCH HETCHY Reservoir A HETCH HETCHY CA records and averages
| Current level | 3788.41 ft |
|---|---|
| Record high | 3807.03 ft (2026-05-25) |
| Record low | 3788.41 ft (2026-08-15) |
| Average of all readings | 3802.11 ft |
| Data span | 0.3 years (121 readings) |
Frequently asked questions
Is HETCH HETCHY Reservoir A HETCH HETCHY CA full right now?
As of 2026-08-15, HETCH HETCHY Reservoir A HETCH HETCHY CA sits at 3788.41 ft, which is current reading available.Over the past 30 days the level has fallen 12.24 ft.
What is the water level at HETCH HETCHY Reservoir A HETCH HETCHY CA today?
The most recent reading is 3788.41 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 HETCH HETCHY Reservoir A HETCH HETCHY CA has ever been?
The highest level in our records is 3807.03 ft on 2026-05-25. The lowest is 3788.41 ft on 2026-08-15. Our record covers about 0.3 years of readings.
Why is HETCH HETCHY Reservoir A HETCH HETCHY CA 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. HETCH HETCHY Reservoir A HETCH HETCHY CA has fallen 12.24 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has HETCH HETCHY Reservoir A HETCH HETCHY CA 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 3807.03 ft and a record low of 3788.41 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.