Welcome to the Sea Level Tracker!


The purpose of the Sea Level Tracker is twofold:
  1. Show actual sea level vs. the projected sea level change curves plainly and
  2. Answer the question, "What rate of sea level change is currently being observed at the selected gauge?"

There are four main sections to the Sea Level Tracker:

  1. Data Entry Panel: Here, the user selects the location and gauge to be analyzed, configuring the visualization characteristics. This includes the gauge, measurement datum, sea level curve rates, various smoothing curves of historical data, trend lines, extreme water levels, and critical elevations for comparison.
  2. Location Map: The map shows the geographic location of the selected gauge. The Sea Level Tracker also allows the user to select the desired gauge for analysis from the map. Just click the location of interest, marked with blue icons.
  3. Visualization Tab: The generated visualization captures the historic hydrologic behavior for the user-selected location, while taking into account historic trends in sea level rise. The final output is configured by the user's selections in the User Interface.
  4. Data Table(s) Tab: For deeper inspection, the Sea Level Tracker allows the user to explore the raw data. The tool allows for variable selection above the table, while also letting the user filter the selected variables to ranges of interest.

Sea Level Tracker - Data Source(s):

Data used in calculations for Sea Level Change are pulled from the NOAA Center for Operational Oceanographic Products and Services Application Programming Interface (CO-OPS API). The CO-OPS Data API is a flexible retrieval mechanism for direct access to CO-OPS' products, such as water levels, predictions, currents, meteorological observations, and more. Users can retrieve output in multiple common formats. The CO-OPS Metadata API can be used to retrieve information about CO-OPS' stations. A request can be made to return information about a specific station, or information about multiple stations can be returned. The types of information accessible via the API are listed in detail under Resource Types. Information on how to use to query data through the CO-OPS API can be found here.


Note: The tool does not predict future water levels. Rather, the tool offers smoothed analysis of historic sea level behavior and the measured trends at a user selected gauge.

To learn more about the tool, we strongly recommend reading the user guide.




(1/5) Select gauge to visualize:



Select data to upload and explore:



(2/5) Calculate moving averages:



(3/5) Calculate trends:



(4/5) Add extreme water levels (EWLs):




(5/5) Add heights for comparison:


To add a new elevation: Enter the height above sea level and a name in the boxes below, then press 'Add elevation'. Please ensure each entered elevation has its own unique name and height.

To remove a previously entered elevation: Enter the correct name into the box below or select the row in the table you would like to delete, then press 'Remove elevation'



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