Deepest lakes & reservoirs in New Jersey by maximum depth (ft)
The estimated greatest depth of the water in a lake can be measured at the lake’s normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake’s average depth can be calculated:Water volume ÷ Surface Area = Average Depth
Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth.
You can find many of the the world’s deepest lakes on LakeLubbers. If you sort the list, you will find the (maximum depth of) the shallowest lakes in our database. Note: For some lakes, lake depth data is unknown, so this table may display fewer lakes than the total 21 articles we have published for New Jersey lakes.
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Below are lakes within USA > US Mid-Atlantic Region > New Jersey > Compared by maximum depth in feet. This list does not represent all lakes in New Jersey, only the 21 New Jersey lake articles we have published on the LakeLubbers website.
Lake name  |
Max depth in feet |
Lake description |
|---|---|---|
| Merrill Creek Reservoir, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
210 ft | Merrill Creek Reservoir, located in Warren County, New Jersey, is a 650-acre man-made lake completed in 1988. The reservoir project took 13 years of p… |
| Round Valley Reservoir, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
180 ft | Round Valley Reservoir spans 2,350 acres in Hunterdon County, New Jersey. The reservoir fills the valley formed by the ring-shaped Cushetunk Mountain,… |
| Lake Aeroflex (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
110 ft | Also known as New Wawayanda Lake Tucked away within New Jersey’s Skylands region, Lake Aeroflex is the crown jewel of the Kittatinny Valley State Park. Sometimes called New Wawayanda… |
| Highland Lakes (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
80 ft | Also known as Lake Wawayanda, Lake Glenwood, Lake Pochung, Lake Wallkill, Pleasant Valley Lake, Tall Timbers Lake, Lake Panorama, Louemma Lake, Scenic Lakes, Highland Lake, East Highland Lake, Upper Highland Lake, Upper West Highland Lake, Lake Wanda The Highland Lakes in New Jersey’s Skylands region have always been special. The Highland Lakes area includes the Vernon Valley, known as some of New… |
| Culver Lake, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
80 ft | Also known as Culvers Lake Culver Lake is an exclusive, privately owned body of water located in Sussex County New Jersey. The immaculate 555-acre lake has an average depth of 5… |
| Spruce Run Reservoir, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
73 ft | Spruce Run Reservoir is one of the oldest reservoirs in the state of New Jersey. Constructed in the 1960s to meet an increasing need for water supplie… |
| Lake Hopatcong, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
58 ft | Lake Hopatcong is the largest lake in New Jersey, at about nine miles long with 45 miles of shoreline and covering 2,560 acres. Only 45 miles from New… |
| Greenwood Lake, NJ/NY (Gateway Region, NJ, Hudson Valley Region, NY, New Jersey, New York, US Mid-Atlantic Region, USA) |
57 ft | Formerly known as “Long Pond”, Greenwood Lake is a natural reservoir that straddles the New York/New Jersey border. The lake is the largest freshwater… |
| Lake Tappan, NJ/NY (Gateway Region, NJ, Hudson Valley Region, NY, New Jersey, New York, US Mid-Atlantic Region, USA) |
43 ft | Also known as Tappan Lake, Lake Tappan Reservoir, Tappan Reservoir Lake Tappan is one of a series of reservoirs that was created to deliver drinking water to the huge population of the New York City metro area. The la… |
| Manasquan Reservoir, NJ (New Jersey, Shore Region, NJ, US Mid-Atlantic Region, USA) |
40 ft | Also known as Manasquan County Reservoir Manasquan Reservoir is located in Monmouth County, New Jersey. Artifacts found near the reservoir indicate that its land was once occupied by the Lena… |
| Union Lake, NJ (New Jersey, Southern Shore Region, NJ, US Mid-Atlantic Region, USA) |
27 ft | Union Lake is an 898-acre reservoir located in the town of Millville in southern New Jersey. The lake dates back to the 1790s, when the damming of the… |
| Lake Owassa, NJ (New Jersey, Skylands Region, NJ, US Mid-Atlantic Region, USA) |
24 ft | A privately-owned association lake, Lake Owassa is located in Sussex County in the Culvers Gap Area of the Skyland Region. The lake is only 275-acres… |