Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Northeast Region Marsh Migration is one of a suite of products from the Nature’s Network project. Based on sea level rise (SLR) analysis by NOAA, this dataset depicts potential marsh migration zones at various sea level rise scenarios from 0-6’. Identification of suitable uplands adjacent to tidal wetlands is based on topography, habitat type, land use, and development, and can be used for facilitating marsh migration through land protection and/or management. The NOAA </SPAN><A href="https://coast.noaa.gov/digitalcoast/tools/lca.html"><SPAN>Coastal Change Analysis Program </SPAN></A><SPAN>(CCAP) mapped the initial (current) distribution of potential marshes and and other coastal land cover types. The </SPAN><A href="https://coast.noaa.gov/data/digitalcoast/pdf/slr-marsh-migration-methods.pdf"><SPAN>Detailed Method for Mapping Sea Level Rise Marsh Migration </SPAN></A><SPAN>provides the full methodology for the data used to create the aggregated Marsh Migration layer in Nature’s Network, and describes the initial condition as follows:</SPAN></P><P><SPAN>“Wetland data portrayed as the initial condition within the viewer is derived from NOAA’s Coastal Change Analysis Program (C-CAP). C-CAP produces a nationally standardized database of land cover and land change information for the coastal regions of the U.S. These products provide inventories of coastal intertidal areas, wetlands, and adjacent uplands with the goal of monitoring these habitats by updating the land cover maps every five years. Data used in this analysis reflect conditions as they existed when mapped in the 2005 to 2006 timeframe… For the purposes of this analysis, the full C-CAP classification scheme has been simplified, removing detail in upland features to place emphasis on wetland areas. “ </SPAN></P><P><SPAN>For Nature’s Network, Marsh migration areas were mapped using data available on the </SPAN><A href="https://coast.noaa.gov/digitalcoast/tools/slr"><SPAN>sea level rise viewer </SPAN></A><SPAN>in combination with elevation and tidal range data to examine the extent of undeveloped upland available for migration and predict future marsh habitat in one foot increments up to 6ft. The sea level rise viewer provides access to predicted SLR in 1 foot increments for coastal states. For Nature’s Network, the initial condition and each increment of SLR data were aggregated for the Northeast states, providing a seamless layer depicting the range of SLR scenarios, and the potential marsh migration areas associated with each SLR amount.</SPAN></P><P><SPAN>A number of additional datasets that augment or complement Marsh Migration, are available in the </SPAN><A href="https://nalcc.databasin.org/galleries/8f4dfe780c444634a45ee4acc930a055"><SPAN>Nature’s Network gallery on Data Basin</SPAN></A><SPAN>.</SPAN></P></DIV></DIV></DIV>
Service Item Id: 906a282baff6462db848f86345f6ddb1
Copyright Text: Kevin Ruddock, The Nature Conservancy, Providence RI; NOAA Sea Level Rise Viewer