watersystems
type: Concept
preferred label: vesistöalueet @fi
preferred label: flodområden @sv
related: catchment areas

catchment areas
type: Concept
broader: areas created by nature
related: watersystems
in scheme: conceptscheme
preferred label: tillrinningsområden @sv
preferred label: valuma-alueet @fi

areas created by nature
type: Concept
preferred label: luonnon muodostamat alueet @fi
narrower: catchment areas