Wanaque Reservoir Water Level
New Jersey · updated daily from the U.S. Geological Survey
295.49 ft
Wanaque Reservoir is current reading available and falling (-0.33 ft in the last 7 days).
Change since yesterday: -0.09 ft
Reading as of 2026-08-15
Where Wanaque Reservoir sits historically
Today's level compared with every reading in our 0.3-year record for this lake.
Since yesterday
-0.09 ft
7-day change
-0.33 ft
30-day change
+1.18 ft
1-year change
— ft
Last 30 days
Last 12 months
Wanaque Reservoir records and averages
| Current level | 295.49 ft |
|---|---|
| Record high | 298.37 ft (2026-05-31) |
| Record low | 292.97 ft (2026-07-28) |
| Average of all readings | 295.94 ft |
| Data span | 0.3 years (121 readings) |
Frequently asked questions
Is Wanaque Reservoir full right now?
As of 2026-08-15, Wanaque Reservoir sits at 295.49 ft, which is current reading available.Over the past 30 days the level has risen 1.18 ft.
What is the water level at Wanaque Reservoir today?
The most recent reading is 295.49 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 Wanaque Reservoir has ever been?
The highest level in our records is 298.37 ft on 2026-05-31. The lowest is 292.97 ft on 2026-07-28. Our record covers about 0.3 years of readings.
Why is Wanaque Reservoir 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. Wanaque Reservoir has risen 1.18 ft over the past 30 days. For the operational reason on any given week, check the U.S. Geological Survey directly.
How much has Wanaque 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 298.37 ft and a record low of 292.97 ft.
Nearby lakes in New Jersey
Source: the U.S. Geological Survey. Readings are provisional and subject to revision by the publishing agency. All New Jersey lake levels.