The only partially developed park has a western and eastern section separated by the Bound Brook Gap with the Chimney Rock Road that connects
Bound Brook with Martinsville. The terrain is rocky and mountainous and covered with pine and hemlock. At the center of the western section of the park is the Washington Valley Reservoir (formerly known as the
Bound Brook/Elizabeth Reservoir), which was created in 1920 when the western branch of the
Middle Brook was dammed. The eastern section of the park has the much smaller
East Branch Reservoir and the
Buttermilk Falls of the eastern branch of the Middle Brook. Adjacent to the park is the Chimney Rock Quarry built atop the old Chimney Rock Copper Mine a.k.a. Bound Brook Quarry Copper mines over deep exist and active mining continues to this day as owned and operated by the Stavola group of companies.
Calcite has also been mined from the nearby Chimney Rock Quarry. Many marble and granite companies continue to operate in this area . In 1886, William Haelig leased the land from copper miners to establish his Chimney Rock Quarry. Before 1900, stone was carried out of the quarry to the railroad in Bound Brook by horse-drawn wagons. Haelig persuaded the Central Railroad of New Jersey to lay a spur to the stone pit. Trap rock quarrying was more profitable than mining, and the quarry is still active. The reservoirs have no boat access and are of interest to
anglers. Species that can be caught include
largemouth bass, smallmouth bass, black crappie, bluegill, pumpkinseed, and yellow perch. The park contains numerous trails that are used by hikers and mountain bikers. ==Chimney Rock Hawk Watch==