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Elevation of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland

Dates

Publication Date

Citation

Ackerman, K.V., Defne, Z., and Ganju, N.K., 2021, Coastal wetlands of the Blackwater region, Chesapeake Bay, Maryland: U.S. Geological Survey data release, https://doi.org/10.5066/P9M7H6XG.

Summary

Note: The 2022 data release "Geospatial Characterization of Salt Marshes in Chesapeake Bay" incorporates the Blackwater region salt marsh dataset. (https://doi.org/10.5066/P997EJYB) This data release contains coastal wetland synthesis products for the geographic region of Blackwater salt marsh complex, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent [...]

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Attached Files

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Elev_BW_Browse.png
“Elevation of marsh units overlaying Esri basemap”
thumbnail 1.22 MB image/png
Shapefile: mu_Elev_BW.zip
mu_Elev_BW.CPG 5 Bytes
mu_Elev_BW.dbf 1.22 MB
mu_Elev_BW.prj 425 Bytes
mu_Elev_BW.sbn 89.4 KB
mu_Elev_BW.sbx 7.32 KB
mu_Elev_BW.shp 64.47 MB
mu_Elev_BW.shx 66.64 KB
mu_Elev_BW.sld 7.76 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 Blackwater salt marsh complex is given in terms of mean elevation of conceptual marsh units. The elevation data is based on the 1-meter resolution Coastal National Elevation Database (CoNED).

Additional Information

Shapefile Extension

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