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    • NOAA Office for Coastal Management Sea Level Rise Data: Minor High Tide Flooding Inundation Extent

    Metadata Updated: May 22, 2025

    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 depicting 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 (slr) 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://www.coast.noaa.gov/slr

    These data depict the potential inundation extent of coastal areas resulting from minor high tide flooding, as defined by the NOAA Technical Report NOS CO-OPS 086: Patterns and Projections of High Tide Flooding Along the U.S. Coastline Using a Common Impact Threshold. (https://www.tidesandcurrents.noaa.gov/publications/techrpt86_PaP_of_HTFlooding.pdf)

    The process used to produce the data uses two source datasets to derive the final inundation rasters: the Digital Elevation Model (DEM) of the area and a water surface that represents minor high tide flooding. The minor high tide flooding water surface is based on the equation defined in the technical report referenced above and tidal datum surfaces derived from NOAA's VDatum model.

    The methods used to produce these data does not account for erosion, subsidence, or any future changes in an area's hydrodynamics. It is simply a method to derive data in order to visualize the potential scale and extent, not exact ___location, of inundation from NWS issued Coastal Flood Advisories.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date May 15, 2025
    Metadata Created Date October 31, 2024
    Metadata Updated Date May 22, 2025
    Reference Date(s) 2023 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOS OCM

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 15, 2025
    Metadata Created Date October 31, 2024
    Metadata Updated Date May 22, 2025
    Reference Date(s) 2023 (publication)
    Responsible Party NOAA Office for Coastal Management (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:48101
    Access Constraints Cite As: Office for Coastal Management, [Date of Access]: NOAA Office for Coastal Management Sea Level Rise Data: Minor High Tide Flooding Inundation Extent [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48101., Access Constraints: None, Use Constraints: These data illustrate the scale of potential flooding, not the exact ___location, and do not account for erosion, subsidence, or future construction. Inundation is shown as it may appear during Coastal Flood Advisory conditions. These data should be used only as a screening-level tool for management decisions. As with all remotely sensed data, all features should be verified with a site visit. The dataset is provided "as is," without warranty to its performance, merchantable state, or fitness for any particular purpose. The entire risk associated with the results and performance of this dataset is assumed by the user. This dataset should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes., Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of the Office for Coastal Management or its partners.
    Bbox East Long -65.097
    Bbox North Lat 49.276
    Bbox South Lat 17.75
    Bbox West Long -160.74
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id 15146054-00c8-44ca-819d-5d702207ea58
    Harvest Source Id c0121fd9-df15-4168-ac04-42f6e36a794d
    Harvest Source Title NOS OCM
    Licence 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.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-160.74, 17.75], [-65.097, 17.75], [-65.097, 49.276], [-160.74, 49.276], [-160.74, 17.75]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System EPSG::4269
    Spatial Harvester True

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