| Watchung Reservation | |
|---|---|
 Fall foliage along Watchung Reservation Sierra Trail | |
  Location in New Jersey | |
| Location | Union County, New Jersey |
| Nearest city | Summit and Mountainside |
| Coordinates | 40°41′11″N 74°22′24″W / 40.68639°N 74.37333°W |
| Area | 1,945 acres (7.87 km2) |
| Elevation | 292 ft (89 m) |
| Governing body | Union County Parks Department |
Watchung Reservation is the largest nature reserve in Union County, New Jersey, United States.[1] The Watchung area is located on a ridge within northern-central New Jersey, as it consists mainly of the upper valley of Blue Brook, between the ridges of the First Watchung Mountain and Second Watchung Mountains. A dam near the headwaters of the creek creates Lake Surprise.
The reservation covers an area of 1,945 acres (787 ha), as it is bounded by the city of Summit, the borough of Mountainside, and the townships of Berkeley Heights, Scotch Plains, and Springfield.
- ^ "Watchung Reservation". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved August 11, 2011.