Wahiawa Reservoir Water Level
Hawaii · updated daily from the U.S. Geological Survey
53.28 ft
Wahiawa Reservoir is low for this time of year and rising (+7.20 ft in the last 7 days).
Change since yesterday: -2.02 ft
Reading as of 2026-08-14 · higher than 1% of August readings on record
Where Wahiawa Reservoir sits historically
Today's level compared with every reading in our 5.0-year record for this lake.
Since yesterday
-2.02 ft
7-day change
+7.20 ft
30-day change
-0.79 ft
1-year change
-10.89 ft
Last 30 days
Last 12 months
Full history (5.0 years)
Wahiawa Reservoir records and averages
| Current level | 53.28 ft |
|---|---|
| Record high | 82.96 ft (2026-03-20) |
| Record low | 45.91 ft (2026-07-08) |
| Average of all readings | 65.85 ft |
| Data span | 5.0 years (1,763 readings) |
Frequently asked questions
Is Wahiawa Reservoir full right now?
As of 2026-08-14, Wahiawa Reservoir sits at 53.28 ft, which is low for this time of year.Over the past 30 days the level has fallen 0.79 ft.
What is the water level at Wahiawa Reservoir today?
The most recent reading is 53.28 ft (2026-08-14), sourced from the U.S. Geological Survey. Readings on this page refresh automatically as the agency publishes new data.
What is the highest Wahiawa Reservoir has ever been?
The highest level in our records is 82.96 ft on 2026-03-20. The lowest is 45.91 ft on 2026-07-08. Our record covers about 5.0 years of readings.
Is Wahiawa Reservoir low for this time of year?
Compared with every August in our records, the current level is higher than 1% of them — low for this time of year. Seasonal comparison matters more than the raw number, because most reservoirs draw down predictably through late summer and refill over winter and spring.
Why is Wahiawa 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. Wahiawa Reservoir has fallen 0.79 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Wahiawa Reservoir changed over the past year?
The level is -10.89 ft compared with this date last year (53.28 ft today). The full-history chart above covers 5.0 years, with a record high of 82.96 ft and a record low of 45.91 ft.
Nearby lakes in Hawaii
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All Hawaii lake levels.