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Coastal wetlands of north shore Long Island, New York


Publication Date


Welk, R.J., Defne, Z., and Ganju, N.K., 2020, Coastal wetlands of north shore Long Island, New York: U.S. Geological Survey data release,


This data release contains coastal wetland synthesis products for the geographic region of north shore Long Island, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem service potential [...]

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These polygons were created to be used in evaluating the spatial variation of the response and resiliency of the salt marsh complex based on consistently defined marsh units while facilitating a better understanding of the relative importance of the processes involved. The salt marsh complex of eastern Long Island was delineated to smaller, conceptual marsh units by geoprocessing of surface elevation data. Based on the marsh units, metrics for coastal wetland vulnerability have been developed.

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DOI doi:10.5066/P9UNOMM8

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