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Results of Groundwater Characterisation in the International Elbe River Basin District. Hana Prchalová, WRI T.G.M. Prague Dresden, 4. 3. 2005. Groundwater. Why Groundwater?. Groundwater account for 97% of freshwater. 75 % of EU inhabitants depend on groundwater for water supply. - PowerPoint PPT Presentation
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Results of Groundwater Characterisation in the
International Elbe River Basin District
Hana Prchalová, WRI T.G.M. Prague
Dresden, 4. 3. 2005
Groundwater
• Groundwater account for 97% of freshwater
• 50 – 90 % of the river flow come from groundwater
• 75 % of EU inhabitants depend on groundwater for water supply
• Terrestrial ecosystem and surface water are affected by groundwater
Why Groundwater?
Groundwater Bodies Characterisation
• Delineation of groundwater bodies• Characteristics of groundwater bodies• General character of overlying strata• Significant pressures for groundwater• Assessement of groundwater bodies
(achieving of environmental objectives 2015)
• Preliminary identification of GW bodies with less stringent objectives
Groundwater Bodies Characterisation
• Different aproaches and methods
• Comparable results
• Evaluated anthropogennic pressures:– Groundwater abstractions– Point sources of pollution– Diffuse sources of pollution– Other pressures
Results of Characterisation – Delineation of GW Bodies
Results of Characterisation – Delineation of GW Bodies
Delineation of Groundwater Bodies
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Results of Characterisation – Achieving of Quantity Objectives
Results of Characterisation – Achieving of Chemical Objectives
Results of Characterisation – Achieving of Objectives
Risk Assessement
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not at risk CZ not at risk DE risk quantity CZrisk quantity DE risk chemical CZ risk chemical DErisk both CZ risk both DE
Results of Characterisation – Achieving of Objectives
Risk Assessement
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not at risk CZ not at risk DE risk quantity CZrisk quantity DE risk chemical CZ risk chemical DErisk both CZ risk both DE
Results of Characterisation• Groundwater abstractions are not
essential problem• Point sources of pollution – old
contaminated sites are especially significant
• Diffuse sources of pollution – agriculture is significant pressure
• Significant other pressures – mainly minning areas (former and recent exploitation)
Less Stringent Groundwater Bodies - Quantity
Less Stringent Groundwater Bodies - Chemical
Less Stringent Groundwater Bodies
• Preliminary identification only
• Predominantly impact of exploitation
Thank you for your attention
