Water developments and their impact on runoff in the Upper Tisa catchment

The 157 200 km2 large catchment of the River Tisa is situated in the eastern part of the Carpathian Basin, also known as the Central Danube Basin. The upper catchment down to the village Záhony is 32 782, that down to Tokaj 49 449 km2 large. The origin of the name Tisa is still unclear, some linguists trace it back to an Indo European root supposed to mean muddy, or silty. In Roman documents the river is mentioned under the names Parsiou, Pthirus, Tigas and Tisianus, while in the mediaeval Latin chronicles in the forms Tisia and Tysia