Decree No. 31 of 1997 of the Ministry of Environmental Protection and Country Planning on the establishment of the Balaton Highlands National Park.

This Decree creates the Balaton Highlands National Park integrating the areas listed in Annex 1, which are declared as protected by this Decree, with the areas listed in Annex 2, which are already protected areas, for a total of 56,696.5 hectares. Annex 3 lists the topographical lot numbers of areas declared by this Decree as highly protected. Annex 4 shows the topographical lot numbers of areas, which has been declared highly protected previously. Highly protected areas of the national park reach a total of 10.471,6 hectares.