Big Flat Brook
Big Flat Brook is the name of Flat Brook upstream of the inflow of Little Flat Brook, a tributary of the Delaware River, in Sussex County, New Jersey in the United States.
Big Flat Brook is 16.5 miles (26.6 km) long.
Coordinates: 41°11′42″N 74°50′03″W / 41.194899°N 74.834104°W
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