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    • High Tide Flooding Products from NOAA CO-OPS

    Metadata Updated: March 13, 2024

    High tide flooding is the overflow or excess accumulation of water that covers typically dry coastal land and occurs during high tides. As relative sea levels rise, high tide flooding (HTF) is occurring more frequently, even on sunny days. HTF creates short term impacts like road closures, overflowing storm drains, and temporary business closures. Over the long term, recurrent HTF causes more severe impacts like damage to below-ground infrastructure and degraded wetlands.

    Through NOAA's National Ocean Service (NOS), the Center for Operational Oceanographic Products and Services (CO-OPS) and its predecessors have gathered oceanographic data along our nation's coasts for over 200 years to protect life, property, and the environment. Serving both the public and other government agencies, CO-OPS is the authoritative source for accurate, reliable, and timely water-level and current measurements that support safe and efficient maritime commerce, sound coastal management, and recreation. As part of those roles, CO-OPS offers a suite of interactive products that helps communities understand when, where, and how often high tide flooding may occur along the coast to better inform their coastal flood planning and mitigation efforts. The suite includes a summary of historical HTF days as well as Monthly and Annual HTF Outlooks which are produced for specific stations.

    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 February 29, 2024
    Metadata Created Date August 25, 2023
    Metadata Updated Date March 13, 2024
    Reference Date(s) 2016 (creation), 2016 (publication)
    Frequency Of Update monthly

    Metadata Source

    Harvested from NOS CO-OPS

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date August 25, 2023
    Metadata Updated Date March 13, 2024
    Reference Date(s) 2016 (creation), 2016 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:70135
    Access Constraints Cite As: Center for Operational Oceanographic Products and Services, [Date of Access]: High Tide Flooding Products from NOAA CO-OPS [Data Date Range], https://www.fisheries.noaa.gov/inport/item/70135., Access Constraints: None., Use Constraints: In the event of severe weather, coastal flooding may still occur outside of dates identified in this tool. This tool should not be used for real-time situations. To monitor water levels in real-time and track storms, visit our Coastal Inundation Dashboard (the URL is included in the Distribution Information Section, but is https://tidesandcurrents.noaa.gov/inundationdb/)., Distribution Liability: In the event of severe weather, coastal flooding may still occur outside of dates identified in this tool. This tool should not be used for real-time situations. To monitor water levels in real-time and track storms, visit our Coastal Inundation Dashboard (the URL is included in the Distribution Information Section, but is https://tidesandcurrents.noaa.gov/inundationdb/).
    Bbox East Long -66.9
    Bbox North Lat 61.24
    Bbox South Lat -14.3
    Bbox West Long 144.6
    Coupled Resource
    Frequency Of Update monthly
    Harvest Object Id 48473c20-7566-4170-907d-1787ea1a878a
    Harvest Source Id 217272a2-c20f-4b9e-a0e1-e42a6d539971
    Harvest Source Title NOS CO-OPS
    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 CO-OPS updates high tide flooding likelihoods monthly using a methodology based on Dusek et al. 2023 (see URL 1 above). Flooding likelihoods are derived from a probabilistic model that incorporates tide predictions, sea level rise trends, and seasonal changes in coastal sea level to predict the potential that a higher than normal high tide may exceed established NOS flood thresholds. During these periods, high tide flooding may occur in flood-prone areas.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[144.6, -14.3], [-66.9, -14.3], [-66.9, 61.24], [144.6, 61.24], [144.6, -14.3]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2016

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