The one New Jersey lake here with a published full pool is sitting at or above it. Another 8 have no full-pool figure and read against their own records instead. The newest reading on this page is from October 1, 2026.
| Lake | Level now | Full pool | Against full pool | Reading |
|---|---|---|---|---|
| Lake Hopatcong NJDEP (dam and water level plan); USGS gauge | 9.13 ft | 9.00 ft | 0.1 ft above full pool — unusually high for early October | October 1, 2026 |
| Spruce Run Reservoir New Jersey Water Supply Authority | 263.34 ft | not published | Reading is typical for early October. | October 1, 2026 |
| Wanaque Reservoir North Jersey District Water Supply Commission | 292.87 ft | not published | Reading is typical for early October. | October 1, 2026 |
| Boonton Reservoir Jersey City Municipal Utilities Authority | 305.52 ft | not published | Reading is on the high side for early October. | October 1, 2026 |
| Greenwood Lake NJDEP Division of Parks and Forestry (dam); USGS gauge | 618.50 ft | not published | Current reading shown; this gauge's public record is too short for seasonal comparisons. | October 1, 2026 |
| Lake Tappan Veolia Water New Jersey | 55.22 ft | not published | Reading is on the high side for early October. | October 1, 2026 |
| Oradell Reservoir Veolia Water New Jersey | 23.37 ft | not published | Reading is unusually high for early October. | October 1, 2026 |
| Swimming River Reservoir New Jersey American Water | 35.28 ft | not published | Reading is unusually high for early October. | October 1, 2026 |
| Woodcliff Lake Reservoir Veolia Water New Jersey | 91.23 ft | not published | Reading is unusually high for early October. | October 1, 2026 |
“Full pool” means the conservation pool — what that is, and what it is not. Lakes with no published figure are read against their own seasonal record instead.
New Jersey lake levels, asked and answered
What are the lake levels in New Jersey today?
The one New Jersey lake here with a published full pool is sitting at or above it. Another 8 have no full-pool figure and read against their own records instead. The newest reading on this page is from October 1, 2026.
Where do these New Jersey lake levels come from?
Each row is the gauge the agency that runs the lake publishes — the Corps of Engineers, the Bureau of Reclamation, the state water agency or the US Geological Survey, depending on the lake. Open a lake and its own page re-reads that gauge as the page loads, wherever the agency lets a browser do it.