NOAA Office for Coastal Management Marsh Migration
Data Set (DS) | Office for Coastal Management (OCM)GUID: gov.noaa.nmfs.inport:55958 | Updated: May 30, 2023 | Published / External
Summary
Short Citation
Office for Coastal Management, 2024: NOAA Office for Coastal Management Marsh Migration, https://www.fisheries.noaa.gov/inport/item/55958.
Full Citation Examples
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/.
Distribution Information
-
Download data by state.
None
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.
Controlled Theme Keywords
climatologyMeteorologyAtmosphere, elevation, environment, inlandWaters
Child Items
No Child Items for this record.
Contact Information
Data Steward
Office for Coastal Management (OCM)
https://www.coast.noaa.gov/
Extents
144.5° W,
-64.5° E,
49.276° N,
-14.5° S
Item Identification
Title: | NOAA Office for Coastal Management Marsh Migration |
---|---|
Short Name: | Marsh Migration |
Status: | Completed |
Publication Date: | 2023 |
Abstract: |
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/. |
Purpose: |
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. |
Supplemental Information: |
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. |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
ISO 19115 Topic Category |
climatologyMeteorologyAtmosphere
|
ISO 19115 Topic Category |
elevation
|
ISO 19115 Topic Category |
environment
|
ISO 19115 Topic Category |
inlandWaters
|
UNCONTROLLED | |
None | Bathymetry/Topography |
None | CCAP |
None | Coastal Change Analysis Program |
None | Elevation |
None | Land Cover Analysis |
None | Marsh Migration |
None | Net Sea Level Change |
None | Sea Level Rise |
Spatial Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | United States |
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Maintenance Frequency: | As Needed |
Data Presentation Form: | Image (digital) |
Distribution Liability: |
Users must assume responsibility to determine the appropriate use of these data. DATA SHOULD NOT BE USED FOR LEGALLY BINDING APPLICATIONS. |
Data Set Credit: | NOAA Office for Coastal Management |
Support Roles
Data Steward
Date Effective From: | 2023 |
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Date Effective To: | |
Contact (Organization): | Office for Coastal Management (OCM) |
Address: |
2234 South Hobson Avenue Charleston, SC 29405-2413 |
URL: | https://www.coast.noaa.gov/ |
Contact Instructions: |
coastal.info@noaa.gov |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | 144.5 | |
---|---|---|
E° Bound: | -64.5 | |
N° Bound: | 49.276 | |
S° Bound: | -14.5 |
Access Information
Security Class: | Unclassified |
---|---|
Data Access Constraints: |
None |
Data 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. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/slr_wetland/ |
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Distributor: | |
Description: |
Download data by state. |
URLs
URL 1
URL: | https://coast.noaa.gov/digitalcoast/tools/slr |
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Name: | NOAA SLR Viewer Tools Page |
URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov/slr |
---|---|
Name: | NOAA SLR Viewer |
URL Type: |
Online Resource
|
URL 3
URL: | https://coast.noaa.gov/data/digitalcoast/pdf/slr-marsh-migration-methods.pdf |
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Name: | NOAA SLR Viewer Marsh Migration Mapping Methods |
URL Type: |
Online Resource
|
Data Quality
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. |
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Lineage
Sources
2016 Coastal Change Analysis Program (CCAP) Land Cover Data
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | NOAA Office for Coastal Management |
Citation URL: | https://chs.coast.noaa.gov/htdata/raster1/landcover/bulkdownload/ |
Citation URL Description: |
Customized Download |
Source Contribution: |
2016 land cover data were used to determine distribution of marsh land cover types. |
NOAA OCM SLR Viewer DEMs
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | NOAA Office for Coastal Management |
Citation URL: | https://coast.noaa.gov/slrdata/ |
Source Contribution: |
Digital elevation models for CONUS, HI, American Samoa, Guam, CNMI, Puerto Rico, and the U.S. Virgin Islands. |
NOAA VDatum
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | NOAA National Ocean Service |
Citation URL: | https://vdatum.noaa.gov |
Source Contribution: |
VDatum tidal models were used to establish a relationship between the DEMs and various tidal datums. |
Process Steps
Process Step 1
Description: |
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. |
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Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 55958 |
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GUID: | gov.noaa.nmfs.inport:55958 |
Metadata Record Created By: | William Brooks |
Metadata Record Created: | 2019-03-25 10:39+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-05-30 18:09+0000 |
Metadata Record Published: | 2020-11-13 |
Owner Org: | OCM |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2020-11-13 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2021-11-13 |