Loop is an expression in traditional German for path – we invite students, citizens and visitors interested in water to follow this water path and find information about hydrological processes: precipitation, evaporation, infiltration, percolation, and how these processes define the amount of groundwater that is available for drinking, agriculture and for the environment.

per year
Precipitationrain and snow+760
Evaporationfrom surfaces -100
through plants (transpiration)-440
Runoffsurface runoff-80
base flow from ground water-140
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