Lake Hopatcong
Lake Hopatcong is a reservoir of some 2,685 acres on the Musconetcong River, in New Jersey. You will find it in Sussex County. It…
Reservoir
State
Lake beaches and swimming lakes in New Jersey
There are 12 lakes and reservoirs in New Jersey on this site. 10 of them are reservoirs held back by a dam and 2 are natural lakes. Highland Lakes is the biggest, covering roughly 3,190 acres. The deepest water on record here is at Round Valley Reservoir, about 180 feet. Rivers that feed or drain them include the Rockaway River, the outflow = Wanaque River and the Musconetcong River. A public agency publishes a live water level for 8 of them, which is what the level pages show. The agency behind the most lakes here is NJ DEP. Across the state we map 1 named swimming spots and access points from federal and state sources.
4Lakes
0Swimming spots
Lakes in New Jersey on the map
Click a marker to open the lake page.
Lakes in New Jersey
Each page has the live water level, weather, access points and sources.
Round Valley Reservoir
Round Valley Reservoir is a reservoir of some 2,300 acres on the outflow =, in New Jersey. The lake is in Hunterdon County.…
Reservoir
Spruce Run Reservoir
Spruce Run Reservoir is a reservoir of some 1,290 acres on the Spruce Run, in New Jersey. It lies in Hunterdon County. It is…
Reservoir
Greenwood Lake
Greenwood Lake is a 1,927-acre reservoir on the outflow = Wanaque River in New Jersey. It is managed by Greenwood Lake Commission…
Reservoir
Current lake levels in New Jersey
Readings are refreshed from the operating agency and stamped with the time they were taken. A falling pool widens the beaches and shortens the ramps.
| Lake | Level | Full pool | How full |
|---|---|---|---|
| Lake Hopatcong | — | — | no percent published |
| Round Valley Reservoir | — | — | no percent published |
| Spruce Run Reservoir | — | — | no percent published |
| Greenwood Lake | 618.39 ft | — | no percent published |
Cities in New Jersey
Lakes and swimming spots near the main towns.