Geography of Cumberland County, New Jersey

By | March 14, 2024

Geography of Cumberland County, New Jersey

Cumberland County, nestled in the southwestern corner of New Jersey, is a region defined by its diverse geography, encompassing fertile farmland, meandering rivers, and expansive wetlands. This county, situated along the banks of the Delaware Bay and the Maurice River, boasts a rich natural tapestry shaped by centuries of geological processes and human activity. From its bustling urban centers to its tranquil rural landscapes, Cumberland County offers a unique blend of natural beauty and cultural heritage for residents and visitors to explore. Check allunitconverters to learn more about the state of New Jersey.

Terrain and Landforms

The topography of Cumberland County is characterized by a mixture of low-lying plains, gently rolling hills, and marshy wetlands. Much of the county’s landscape is dominated by fertile farmland, cultivated for crops such as corn, soybeans, and tomatoes, which thrive in the region’s mild climate and rich soil.

One of the defining features of Cumberland County is its proximity to the Delaware Bay, a tidal estuary that forms the western boundary of the county. The bay’s brackish waters support a diverse array of marine life, including fish, shellfish, and migratory birds, making it a popular destination for fishing, birdwatching, and other recreational activities.

In addition to the Delaware Bay, Cumberland County is also home to the Maurice River, a scenic waterway that meanders through the heart of the region. The Maurice River and its tributaries flow through dense forests, marshes, and wetlands, providing habitat for a variety of plant and animal species, including bald eagles, ospreys, and migratory waterfowl.

The county’s landscape is further shaped by the presence of several state parks and wildlife management areas, including Parvin State Park, the Edward G. Bevan Fish and Wildlife Management Area, and the Cumberland County Seabreeze Recreation Area. These protected areas offer opportunities for hiking, camping, and wildlife viewing, as well as serving as important habitats for rare and endangered species.


Cumberland County experiences a humid subtropical climate, characterized by hot, humid summers and mild winters. The region’s proximity to the Atlantic Ocean moderates temperatures throughout the year, with coastal breezes providing relief from the summer heat and preventing extreme cold during the winter months.

Summer temperatures in Cumberland County typically range from the upper 70s to the mid-80s Fahrenheit, with occasional heatwaves pushing temperatures into the 90s. Humidity levels can be high during the summer months, particularly in areas near the Delaware Bay, where sea breezes provide some relief from the heat.

Winters in Cumberland County are relatively mild, with average temperatures ranging from the upper 20s to the mid-40s Fahrenheit. While snowfall is infrequent, the region occasionally experiences winter storms that bring significant accumulations of snow and ice, particularly in the northern and western parts of the county.

Precipitation in Cumberland County is relatively evenly distributed throughout the year, with the majority of rainfall occurring during the spring and summer months. The county receives an average of around 45 inches of precipitation annually, which helps to sustain the region’s lush vegetation and abundant water resources.

Rivers and Lakes

The Maurice River is the primary waterway in Cumberland County, flowing from its headwaters in the Pinelands of southern New Jersey through the heart of the county before emptying into the Delaware Bay. The river’s meandering course provides habitat for a variety of fish and wildlife, as well as offering recreational opportunities such as kayaking, canoeing, and fishing.

In addition to the Maurice River, Cumberland County is also home to several smaller rivers, streams, and creeks, including the Cohansey River, the Manumuskin River, and the Menantico Creek. These waterways contribute to the county’s rich hydrology and provide habitat for a variety of aquatic species, including freshwater fish, turtles, and amphibians.

While Cumberland County is not known for its large lakes, there are several smaller impoundments and reservoirs scattered throughout the region, including Sunset Lake in Bridgeton and Union Lake in Millville. These bodies of water provide opportunities for boating, fishing, and picnicking, as well as serving as important habitats for waterfowl and other wildlife.


Cumberland County, New Jersey, is a region of diverse natural beauty, characterized by fertile farmland, meandering rivers, and scenic wetlands. The county’s mild climate and abundant water resources support a rich array of plant and animal life, making it a popular destination for outdoor recreation and ecotourism. From its bustling urban centers to its tranquil rural landscapes, Cumberland County offers residents and visitors alike a chance to explore the unique blend of natural and cultural heritage that defines this corner of the Garden State.