gov.noaa.nmfs.inport:55958 eng UTF8 dataset Office for Coastal Management resourceProvider 2026-03-04T19:17:17 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) NOAA Office for Coastal Management Marsh Migration Marsh Migration 2023 publication NOAA/NMFS/EDM 55958 https://www.fisheries.noaa.gov/inport/item/55958 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/digitalcoast/tools/slr WWW:LINK-1.0-http--link NOAA SLR Viewer Tools Page Online Resource download https://coast.noaa.gov/data/digitalcoast/pdf/slr-marsh-migration-methods.pdf WWW:LINK-1.0-http--link NOAA SLR Viewer Marsh Migration Mapping Methods Online Resource download https://coast.noaa.gov/slr WWW:LINK-1.0-http--link NOAA SLR Viewer Online Resource download imageDigital These data were created as part of the National Oceanic and Atmospheric Administration Office for Coastal Management's efforts to create an online mapping viewer called the Sea Level Rise and Coastal Flooding Impacts Viewer. It depicts potential sea level rise and its associated impacts on the nation's coastal areas. The purpose of the mapping viewer is to provide coastal managers and scientists with a preliminary look at sea level rise and coastal flooding impacts. The viewer is a screening-level tool that uses nationally consistent data sets and analyses. Data and maps provided can be used at several scales to help gauge trends and prioritize actions for different scenarios. The Sea Level Rise and Coastal Flooding Impacts Viewer may be accessed at: https://coast.noaa.gov/slr. This metadata record describes the Marsh Migration data displayed in the SLR Viewer. These data represent the potential distribution of each wetland type based on their elevation and how frequently they may be inundated under potential future SLR scenarios, from 0 to 10ft of SLR. As sea level rises, higher elevations will become more frequently inundated, allowing for marsh migration landward. At the same time, some lower-lying areas will be so often inundated that the marshes will no longer be able to thrive, becoming lost to open water. These data are based on the assumption that specific wetland types exist within an established tidal elevation range, based on an accepted understanding of what types of vegetation can exist given varying frequency and time of inundation, as well as salinity impacts from such inundation. The data were created using the NOAA OCM Coastal Change Analysis Program (CCAP) land cover data, the SLR Viewer's digital elevation models, and NOAA VDatum tidal surfaces. The data are available in 0.5ft increments of net sea level change, from 0 to 10ft. To determine the appropriate level, the user must identify a SLR scenario and an applicable accretion rate for the area of interest. The easiest way to do this is to go into the SLR Viewer's Marsh Migration tab; select a location, SLR scenario, and timeframe; and identify the closest available 0.5ft increment to what the viewer shows. For more information, see the tutorial at https://coast.noaa.gov/elearning/marshmigration/. Data are available for download at https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/slr_wetland/. The NOAA Office for Coastal Management has developed marsh migration data for use in the Office's Sea Level Rise Viewer. These data depict potential distribution of marsh types based on potential future water levels due to sea level rise. NOAA Office for Coastal Management completed Office for Coastal Management 2234 South Hobson Avenue Charleston SC 29405-2413 https://www.coast.noaa.gov/ WWW:LINK-1.0-http--link Office for Coastal Management Website Website listed for Office for Coastal Management information coastal.info@noaa.gov custodian asNeeded Bathymetry/Topography CCAP Coastal Change Analysis Program Elevation Land Cover Analysis Marsh Migration Net Sea Level Change Sea Level Rise theme United States place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Inundation project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: NOAA Office for Coastal Management Marsh Migration [Data Date Range], https://www.fisheries.noaa.gov/inport/item/55958. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. otherRestrictions Distribution Liability: Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 55958 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/55958.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US climatologyMeteorologyAtmosphere elevation environment inlandWaters 144.5 -64.5 -14.5 49.276 A detailed methodology for producing these data can be found via the following url: https://coast.noaa.gov/data/digitalcoast/pdf/slr-marsh-migration-methods.pdf Attributes for this product are as follows: 0 Background, 2 High Intensity Developed, 3 Medium Intensity Developed, 4 Low Intensity Developed, 5 Developed Open Space, 8 All Uplands, 13 Palustrine Forested Wetland, 14 Palustrine Scrub/Shrub Wetland, 15 Palustrine Emergent Wetland, 17 Brackish/Transition Wetland, 18 Estuarine Wetland, 19 Unconsolidated Shore, 21 Open Water. These data are projected in the applicable NAD83 UTM zone and have a resolution of 10m. https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/slr_wetland/ WWW:LINK-1.0-http--link https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/slr_wetland/ Download data by state. download dataset Completeness Report These data were derived from the most recent elevation data available at the date of processing that met project specifications, the most recent VDatum tidal model data available at the date of processing, and 2016 CCAP Land Cover data. A tidal zones raster is created for each increment of sea level rise (SLR) using a 10m DEM of a state and tidal surfaces created from VDatum representing MLLW, MTL, and MHHW. In addition, tidal surfaces for MHHWS (MHHW Spring) and a freshwater wetland-upland transition boundary are created from the VDatum MHHW tidal surface. This zones layer is an integer raster where each zone (i.e., MTL to MHHW) is coded. Select upland classes in the land cover source data are recoded in preparation for the next steps, resulting in a modified land cover raster where: 0 = Background 2 = High Intensity Developed 3 = Medium Intensity Developed 4 = Low Intensity Developed 5 = Developed Open Space 8 = All Uplands 13 = Palustrine Forested Wetland 14 = Palustrine Scrub/Shrub Wetland 15 = Palustrine Emergent Wetland 17 = Brackish/Transition Wetland 18 = Estuarine Wetland 19 = Unconsolidated Shore 21 = Open Water The tidal zones raster for each SLR increment (0-10ft in 0.5ft increments) is then combined with the recoded land cover raster for the state to create a raster where pixels have both a tidal zone and a land cover code. Using a ruleset that says which land cover types exist in each tidal zone, the combined raster is recoded to a new land cover raster where the land cover class has changed based on the tidal zone. See https://coast.noaa.gov/data/digitalcoast/pdf/slr-marsh-migration-methods.pdf for more detailed information. Office for Coastal Management processor Source Contribution: 2016 land cover data were used to determine distribution of marsh land cover types. 2016 Coastal Change Analysis Program (CCAP) Land Cover Data NOAA Office for Coastal Management https://chs.coast.noaa.gov/htdata/raster1/landcover/bulkdownload/ WWW:LINK-1.0-http--link Source Citation URL Customized Download information originator Source Contribution: Digital elevation models for CONUS, HI, American Samoa, Guam, CNMI, Puerto Rico, and the U.S. Virgin Islands. NOAA OCM SLR Viewer DEMs NOAA Office for Coastal Management https://coast.noaa.gov/slrdata/ WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information originator Source Contribution: VDatum tidal models were used to establish a relationship between the DEMs and various tidal datums. NOAA VDatum NOAA National Ocean Service https://vdatum.noaa.gov WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information originator