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NOAA Water Levels for Coastal, Estuaries and Great Lakes regions
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For over 200 years, NOAA's Center for Operational Oceanographic Products and Services
(CO-OPS) and its predecessors have been managing a comprehensive system for observing,
communicating, and assessing water levels nationwide, including on the Great Lakes,
and in certain U.S. territories. The standard data collected from our water level
stations are reported in 6-minute intervals, and support the National Water Level
Observation Network (NWLON), short-term Vertical Datum (VDatum) Projects, the National
Tsunami Warning System, the Physical Oceanographic Real-Time System, or PORTS Program,
and other partnerships. These data are quality controlled and used to support safe
and efficient maritime commerce, sound coastal management, recreation, and studies
in sea level and climate changes. The secondary datasets derived from these observations
are highs and lows (except for Great Lakes), hourly heights, daily means (Great Lakes
only), and monthly means, from which all other CO-OPS datasets are derived for datums,
tidal predictions, and sea level applications. Hourly heights in particular are utilized
to calculate historic high tide flooding statistics, and to compute monthly mean sea
level values, which are incorporated into tidal datums for nautical charting and harmonic
constituents for generating tidal predictions. Note: both products of high tide flooding
statistics and tidal predictions are calculated on the fly and are not stored, nor
considered as data.
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Global Change Master Directory (GCMD) Data Center Keywords |
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Global Change Master Directory (GCMD) Instrument Keywords |
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Global Change Master Directory (GCMD) Location Keywords |
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Global Change Master Directory (GCMD) Platform Keywords |
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Global Change Master Directory (GCMD) Science Keywords |
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Global Change Master Directory (GCMD) Service Keywords |
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InPort |
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Latest detailed information on sensors and accuracy can be found at: https://tidesandcurrents.noaa.gov/publications/CO-OPS_Measurement_Spec.pdf |
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NOAA Water Levels for Coastal, Estuaries and Great Lakes regions |
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64567
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NOAA/NMFS/EDM |
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Water level data source |
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https://api.tidesandcurrents.noaa.gov/api/prod/ |
https://api.tidesandcurrents.noaa.gov/api/prod/ |
This is the Data API page where users can learn about the several data products, api
url parameters as well as output parameters. The associated response help page provides
users with more detailed information. |
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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 |
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https://tidesandcurrents.noaa.gov/ |
Tides and Currents |
Website listed for Center for Operational Oceanographic Products and Services |
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https://tidesandcurrents.noaa.gov/api-helper/url-generator.html |
https://tidesandcurrents.noaa.gov/api-helper/url-generator.html |
This is the landing page CO-OPS API builder, used to build API url for several of
data, metadata and derived product for CO-OPS. The documentation page for each of
the categories provides detailed information about the different API url parameters,
product types, returned parameters, response help page, error messages and sample
queries. |
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https://tidesandcurrents.noaa.gov/ports_info.html |
https://tidesandcurrents.noaa.gov/ports_info.html |
This is CO-OPS? Physical Oceanographic Real-Time System, or PORTS © Program |
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https://tidesandcurrents.noaa.gov/publications/CO-OPS_Measurement_Spec.pdf |
Entity Attribute Detail URL |
Entity Attribute Detail URL |
information |
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https://tidesandcurrents.noaa.gov/sea_level_info.html |
https://tidesandcurrents.noaa.gov/sea_level_info.html |
Landing page for Sea Level and Coastal Flooding Information. |
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https://tidesandcurrents.noaa.gov/water_level_info.html |
https://tidesandcurrents.noaa.gov/water_level_info.html |
Landing page for water level observations and products. Downloadable data, tide predictions
(for non-Great Lakes stations), Datums, various reports |
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https://tidesandcurrents.noaa.gov/web_services_info.html |
https://tidesandcurrents.noaa.gov/web_services_info.html |
Landing page for CO-OPS? web services (which is separate from the web site). Services
include APIs, GIS Data Portal (MapServices and FeatureServices), THREDDS Server, AWS,
ERDDAP, SOAP Web Services, SOS, NowCOAST and a Stations Listing. All of these provide
viewable and downloadable data or various reports. Outputs can be text, CSV, JSON,
XML, depending on which web service is used. |
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https://tidesandcurrents.noaa.gov |
Home page for NOAA Tides and Currents |
CO-OPS Main page |
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https://www.fisheries.noaa.gov/inport/item/64567 |
Full Metadata Record |
View the complete metadata record on InPort for more information about this dataset. |
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