EN
Ecohydrology is more than just hydrology and ecology combined. It is functional to its best only, if science, engineering and construction, public administration and political decision assist each other in an integrated scheme and on a common scale. The UNESCO Biosphere Reserve “Lobau”, part of the Danube National Park today, is dependant on all four aspects for its sustained existence. The integrated water regime in Vienna, comprising the Danube river, the “New Danube” flood control channel, the Old Danube oxbow, and the water bodies of the Lobau, is presented here. Political decisions backing the efforts of engineers and biologists enabled the municipal administration to provide all necessary resources to keep the biosphere reserve in a healthy status. Finally outlines for initialising some aspects of ecohydrology in the Danube basin are presented.