High Quality Content by WIKIPEDIA articles! The Great Falls of the Passaic River is a prominent waterfall, 77 feet (23 m) high, on the Passaic River in the city of Paterson in Passaic County in northern New Jersey in the United States. The Congress authorized its establishment as a National Historical Park in 2009. One of the United States` largest waterfalls, it played a significant role in the early industrial development of New Jersey starting in the earliest days of the nation. It is part of the Great Falls of Paterson-Garret Mountain National Natural Landmark. It has also been designated as a National Historic Landmark District since 1976. The Great Falls` raceway and power systems were designated an List of Historic Civil Engineering Landmarks in 1977.