Height systems

Heights above sea level are referred to a height system.

A height system is made up of a network of well-founded and accurately measured points – benchmarks – and has a well-defined vertical datum (zero point).

Through the years, Sweden has had three national height systems: RH 00, RH 70 and RH 2000. The phenomenon of postglacial land uplift, to which the Nordic countries, amongst others, are exposed, is a factor that influences height systems.

Questions and answers

The speed of the land uplift varies and is fastest in northern Sweden on the coast of the Gulf of Bothnia, approximately at the height of Umeå (approx. 11 mm per year) and slowest in Skåne (approx. 1 mm per year).

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