This data was downloaded as a KMZ file from the Peconic Estuary Program (PEP) and converted to a feature dataset for use and consumption with ArcGIS products. From the PEP (2018): "The South Shore Estuary Reserve is part of the National Estuarine Research Reserves.The Long Island South Shore Estuary Reserve encompasses one of New York State's most diverse estuaries and its 326 square mile watershed in Nassau and Suffolk Counties. The Reserve extends from the Queens/Nassau County line eastward about 75 miles to the Village of Southampton in Suffolk County. From south to north, the Reserve extends from the mean high tide line on the ocean side of the barrier island to the inland limits of the estuary's watershed. The Reserve's shallow, interconnected bays and tidal tributaries provide highly productive habitats and support the largest concentration of water-dependent businesses in the State. Home to 1.5 million people, the Reserve is the anchor of the region's tourism, seafood, and recreation industries, attracting millions of visitors each year to enjoy its beauty and bounty."