Extreme Water Levels from CO-OPS

Description

Extremely high or low water levels at coastal locations are an important public concern and a factor in coastal hazard assessment, navigational safety, and ecosystem management. The probability that water levels will exceed a given elevation is based on a statistical analysis of historical extremely high and low water levels. This product provides annual exceedance probability levels for select Center for Operational Oceanographic Products and Services (CO-OPS) water level stations with at least 30 years of data. When used in conjunction with real-time station data, exceedance probability levels can be used to evaluate current conditions and determine whether a rare event is occurring. This information may also be instrumental in planning for the possibility of dangerously high or low water events at a local level. The extreme levels measured by the CO-OPS tide gauges during storms are called storm tides, which are the total observed seawater level during a storm, resulting from the combination of storm surge and the astronomical tide. They do not include wave runup, the movement of water up a slope. Therefore, the 1% annual exceedance probability levels do not necessarily correspond to the Base Flood Elevations (BFE) defined by the Federal Emergency Management Administration (FEMA), which are the basis for the National Flood Insurance Program. The 1% annual exceedance probability levels more closely correspond to FEMA's Still Water Flood Elevations (SWEL). The peak levels from tsunamis, which can cause high-frequency fluctuations at some locations, have not been included in this statistical analysis due to their infrequency during the periods of historic record.

Resources

Name Format Description Link
0 CO-OPS Derived Products API https://api.tidesandcurrents.noaa.gov/dpapi/prod/
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/69876
33 2013 Technical Report on Extreme Water Levels https://tidesandcurrents.noaa.gov/publications/NOAA_Technical_Report_NOS_COOPS_067a.pdf
21 CO-OPS Sea Level and Coastal Flooding Information landing page https://tidesandcurrents.noaa.gov/sea_level_info.html
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/co-ops/dmp/pdf/69876.pdf
0 CO-OPS main page https://tidesandcurrents.noaa.gov/
0 CO-OPS Extreme Water Levels page https://tidesandcurrents.noaa.gov/est/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords

Tags

  • alaska
  • united states of america
  • tidal range
  • western pacific ocean
  • virgin islands
  • delaware
  • goes
  • land surface
  • noaa geostationary operational environmental satellites
  • marshall islands
  • pressure sensors
  • national ocean service
  • nwlon station
  • doc/noaa/nos/co-ops
  • oceans
  • extreme weather
  • sea surface height
  • american samoa
  • new hampshire
  • compound extreme events
  • virginia
  • continent
  • coastal sea levelstations
  • north carolina
  • mississippi
  • noaa
  • guam
  • hawaii
  • caribbean sea
  • south carolina
  • tide gauges
  • coastal u.s. territories
  • north america
  • coastal monitoring
  • maine
  • new york
  • atlantic ocean
  • flooding
  • midway atoll
  • gulf of mexico
  • u.s. department of commerce
  • ports
  • earth science
  • tides and currents
  • texas
  • new jersey
  • acoustic sounders
  • pennsylvania
  • connecticut
  • nwlon
  • national water level observation network
  • ocean
  • hawaiian islands
  • climate indicators
  • water level predictions
  • maryland
  • california
  • geomorphic landforms/processes
  • water level gauges
  • co-ops metadata library
  • coastal united states
  • atmospheric/ocean indicators
  • washington
  • marine environment monitoring
  • central pacific ocean
  • center for operational oceanographic products and services
  • florida
  • tidal height
  • micronesia
  • storm tide
  • louisiana
  • district of columbia
  • coastal processes
  • johnston atoll
  • rhode island
  • alabama
  • puerto rico
  • georgia
  • storm surge
  • microwave water level (mwwl) sensor
  • north atlantic ocean
  • pacific ocean
  • wake island
  • physical oceanographic real-time system
  • oregon
  • bermuda
  • massachusetts
  • tides

Topics

Categories