The catchment area of the Nesse River, with 426.3 km², comprises 54.4 % of the total catchment area of the Hörsel (784 km²) and 139.5 % of the Hörse catchment area above the Nesse estuary (305.6 km²) Thus, the Nesse brings about the same amount of water (3.14 m³/s) to unite with the Hörsel as the Hörsel itself (3.11 m³/s). All Nesse tributaries come from the Thuringian Basin and its marginal plates, while its receiving water Hörsel is largely fed by the montane Thuringian Forest.