Significant bodies of fresh water flowing in a definite course across an area of land, which typically ends at the coast or in a lake. The definition of river water body includes its associated floodplains. Rivers are reported separately from vegetated wetlands and open water bodies. Metadata: https://environmentlive.unep.org/media/docs/projects/metadata_6_6_1.pdf, https://unstats.un.org/sdgs/metadata/files/Metadata-06-06-01a.pdf, https://unstats.un.org/sdgs/metadata/files/Metadata-06-06-01b.pdf