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Elevation of marsh units in north shore Long Island salt marsh complex, New York

Dates

Publication Date
Time Period
2020

Citation

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, https://doi.org/10.5066/P9UNOMM8.

Summary

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 [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

elev_NSLI_browse.png
“Elevation of marsh units overlaying Esri basemap”
thumbnail 332.59 KB image/png
Shapefile: mu_elev_NSLI.zip
mu_elev_NSLI.cpg 5 Bytes
mu_elev_NSLI.dbf 218.1 KB
mu_elev_NSLI.prj 425 Bytes
mu_elev_NSLI.sbn 13.41 KB
mu_elev_NSLI.sbx 612 Bytes
mu_elev_NSLI.shp 11.97 MB
mu_elev_NSLI.shx 10.92 KB
mu_elev_NSLI.sld 7.75 KB

Purpose

The purpose of this shapefile is to calculate the mean elevation for each marsh unit and its vegetated component. Analysis of marsh elevation is part of a comprehensive assessment to identify the factors and their weights in determining the vulnerability and resiliency of salt marshes. Elevation distribution in the north shore Long Island salt marsh complex is given in terms of mean elevation of conceptual marsh units. The elevation data is based on the 1-meter resolution National Elevation Database (NED).

Additional Information

Shapefile Extension

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