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Permanent Tide Gauges

The Norwegian Mapping Authority has 24 permanent tide gauges in Norway: 23 are located along the Norwegian coast and one is located in Ny-Ålesund on Svalbard. 

We have measurements that stretch all the way back to the beginning of the 20th century from some of the permanent tide gauges . We have made attempts to install a permanent tide gauge on Jan Mayen. However, this has proved unsuccessful so far.

Calculating tide tables

Among other things, water level measurements are used to calculate tide tables along the coasts of Norway and Svalbard. The measurements are also used to study sea level changes over time, and to calculate future sea levels.

If you are interested in downloading data from the Norwegian Mapping Authority’s permanent tide gauges, the figure below provides an overview of the available data. The overview shows the year the measurements started (blue) and the years from which data can be downloaded (red).

Data from tide gauges that are not downloadable via Se havnivå or API can in many cases be obtained by contacting the Norwegian Mapping Authority.

For most cases, monthly and annual mean values are available online for the entire period.

Tide gauges

We have three types of tide gauges: float gauges, radar gauges and pressure gauges.

The float gauge is the most common among the permanent tide gauges – 23 of the gauges belong to this category. One of them is located on Svalbard, while the rest are scattered along the entire Norwegian coast.

We have one radar gauge that is located in Hammerfest, and several mobile pressure gauges. The mobile gauges are used when necessary in order to carry out shorter measurement series of water levels in places where we do not have permanent tide gauges.