Black Brook is a tributary of the Passaic River that flows through the Great Swamp National Wildlife Refuge in Morris County, New Jersey, in the United States.
[1] Black Brook rises at the north east base of Long Hill, Chatham Township, Morris County, flows westerly along the hill, by a course of 7 or 8 miles to its recipient in Morris Township, New Jersey.
[2] Due to the chemical fertilizer usage in nearby areas, Black Brook has the second worst water quality after Loantaka Brook.
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