New Jersey Lake Levels
Current water level for 9 lakes and reservoirs in New Jersey, updated daily from public agency data.
New Jersey lake register
Alphabetical current readings from public water agencies
| Lake / reservoirLake / reservoir | Current levelLevel | 7-day change7-day |
|---|---|---|
| Boonton Reservoir | 305.77 ft305.8 ft | +0.36 ft+0.4 ft |
| Greenwood Lake | 10.23 ft10.2 ft | +0.20 ft+0.2 ft |
| Lake Hopatcong | 9.20 ft9.2 ft | +0.13 ft+0.1 ft |
| Lake Tappan | 55.22 ft55.2 ft | +0.18 ft+0.2 ft |
| Oradell Reservoir | 23.45 ft23.4 ft | +0.68 ft+0.7 ft |
| Spruce Run Reservoir | 263.46 ft263.5 ft | +0.25 ft+0.2 ft |
| Swimming River Reservoir | 35.31 ft35.3 ft | +0.10 ft+0.1 ft |
| Wanaque Reservoir | 291.83 ft291.8 ft | -0.33 ft-0.3 ft |
| Woodcliff Lake | 91.29 ft91.3 ft | +0.20 ft+0.2 ft |
Scroll across the table for all readings →
New Jersey lake levels: common questions
Which New Jersey lake has changed most this week?
Oradell Reservoir has risen the most, +0.68 ft over seven days, and Wanaque Reservoir has fallen the most at -0.33 ft.
How often do New Jersey lake levels update?
Each gauge publishes on its own schedule. Most report at least daily, some hourly. This page is rebuilt every day from the U.S. Geological Survey, and the number on an individual lake's page refreshes again in your browser when the agency posts a newer reading. Readings are provisional and can be revised.