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Geological Survey of Denmark and Greenland (GEUS)
Number 2, 1997

The global water resources:
Water is in a natural cycle of constant change between precipitation, evaporation and runoff. Some of the precipitation which falls over land areas evaporates. The portion of the precipitation that does not evaporate is called the net precipitation. On the earth’s surface the net precipitation then flows either to streams, in some areas to drains or infiltrates further into the earth to recharge groundwater. Most of the groundwater flows slowly through aquifers out to streams, lakes and the sea.
Freshwater, the Main Problem of the 21st Century?
Regional Differences and the Consequences
Water Resources in Denmark:
Freshwater Resources quantity and variation
Water Use
The National Water Resource Model
National Groundwater Level Monitoring Network
Fractures in Glacial Till and other Important Research Results
Groundwater Age Dating
Contamination Threats
Water Resources and .... SOCIETY -  THE ENVIRONMENT -  RESEARCH

Hans Jørgen Henriksen Since his appointment at GEUS in 1994 Hans Jørgen Henriksen has worked with integrated water resource evaluation, primarily modelling of groundwater resource quantity, quality and protection. He is also the secretary for the Danish Water Resources Comittee through which he is working on coordinating international and Danish activities within water resources. He has also worked for 10 years in the private sector. At GEUS he works in the Department of Hydrology and Glaciology where he is project leader of the National Water Resource Model and the Regional Pesticide Modelling Project.
Bjarne Madsen is head of the Department of Hydrology and Glaciology at GEUS. He is educated as a civil engineer in hydraulics and hydrodynamics and has more than 20 years of experience working in the public and private sector in consulting, research and development projects in Denmark and abroad. Prior to his appointment at GEUS he was department head at the Water Quality Institute (VKI). He is an advisor to WMO, a member of the Danish Water Resources Committee and chairman of the board for the Groundwater Research Center at the Technical University of Denmark.

Frontpage of nr. 2, 1997 

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