The data is in raster format, in which the attribute information indicates the relative area of water bodies within a specific area. There are separate raster layers for different-sized calculation areas that are 300 m, 500 m, 1000 m, 1500 m, 2000 m, and 5000 m in radius around each pixel. A value 0 indicates that there are no water bodies at all, while a value 1 means that there are 100 % water bodies within a calculation area. The dataset is derived from the SLICES land use dataset by National Land Survey of Finland. Water bodies in the dataset include marine areas, rivers, and lakes. The spatial resolution of the dataset is 100 m x 100 m.
The data is produced as part of the HERCULES consortium/project funded by the Academy of Finland’s Climate Change and Health (CLIHE) research program implemented during the years 2020-2023.