The division of the Vogelsberg into individual natural regions is based, on the one hand, on the relief of the mountain range from its highest point towards the outside and, on the other hand, on its river catchments which radiate outwards: the catchments of the Eder (Schwalm), Lower Fulda (Schlitz and Lüder), Main (Kinzig and Nidda) and Lahn (Ohm).