Stony Brook is a tributary of Green Brook in central New Jersey in the United States.CourseThe Stony Brook starts at, near the intersection of Hillcrest Road and I-78. It flows southeast, crossing Stirling Road, before turning southwest. It then turns northeast and flows into Watchung Lake. In Watchung Lake, it joins an unnamed tributary from the northeast and another one from the southwest. It then leaves the lake and goes southeast through the town of Watchung. It passes through the Stony Brook Gorge in the first Watchung Mountain and over the Wetumpka Falls.It crosses Route 22 and joins the Crab Brook. It then crosses Greenbrook Road and turns south. It crosses West End Avenue and drains into the Green Brook at, in the Green Brook Park.TributariesCrab Brook is the only tributary.
