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National Heritage Corridors

Name and location Total acreage
Blackstone River Valley (Mass.-R.I.)400,000
Delaware and Lehigh (Pa.)n.a.
Erie Canalway (N.Y.)3,087,360
Illinois and Michigan Canal (Ill.)n.a.
Quinebaug and Shetucket Rivers Valley (Conn.)694,000

National Recreation AreasThe National Park SystemNational Historic Trails