 Some parts of the low-lying areas, including Skeetkill Creek Marsh, have been set apart as nature reserves and extension of system that connects to the Overpeck Reserve and Overpeck County Park.According to the United States Census Bureau, the borough had a total area of 2.854 square miles (7.394 km2), including 2.551 square miles (6.608 km2) of land and 0.303 square miles (0.786 km2) of water (10.62%).The borough is informally divided into three sections based on the geographical contour of the land.