ecavas prezentare

VUNERABILITY ASSESSMENT AND MAPPING OF GROUNDWATER RESOURCES TO ENSURE THEIR SUSTAINABLE USE - ECAVAS

Project No. 31-051
ACRONYM: ECAVAS
Coordinator : ROMANIAN SPACE AGENCY
Project manager: Dr.eng. Radu Costantin GOGU

  • In the context of socio - economic development today, which implies an increased requirement for water quality but also in terms of climate change (extreme hydrometeorological conditions - droughts and floods), the groundwater is, in recent years, most strategic water resources countries.

  • As aquifers are no longer natural bodies of water, but are always subject to human impact, their protection in terms of quantity and quality has become very important.
  • Thus, groundwater is the subject of such activities through measures, studies and develop methodologies to protect them, both quantitatively and qualitatively, the ultimate objective of sustainable use of groundwater resources.
  • Efficiency and specificity of measures of protection depends on the evaluation and assessment of groundwater vulnerability to human impact, quantitatively and qualitatively.
  • Assessment of vulnerability to pollution of aquifers is necessary feasibility analysis and development, planning management, land use decisions (raionare and protection, development, improvement and monitoring provided by regulations, technical assistance), and in general education and information.
  • To achieve these goals on a scientific basis, any assessment must be conducted under the three laws of groundwater vulnerability (CTAGWV - WSTB - CGER - NRC, 1993):
    • First Law = All groundwater is vulnerable.
    • The second law = Uncertainty is inherent in all vulnerability assessments.
    • The third law = what is obvious can be hidden and difficult to explain what can not be truncated
  • In Romania, as well as in many other countries around the world have laws or decrees for the protection and exploitation of groundwater. Through them is legally defined areas within which human activities are regulated, or protected areas.
  • In general, the definition of these areas is made arbitrarily, given the complexity of natural realities of the area (biological, hydrological and hydrogeological particular) to be taken into account difficulties in addressing these problems.
  • Some effective tools, more and more used in the protection of groundwater, are maps of their vulnerability. However, although not a "panacea" (J. Vrba, A. Zaporozec, 1994), are formed by extensive analysis, created based on real data and complex, the qualitative and quantitative hydrogeological information is combined with complementary data overlap required (land use, climate, etc.).
  • Groundwater vulnerability maps that emerged in the early 1970s, presented in terms of quantity and quality, some features of underground environment that causes vulnerability to contamination of aquifers.
  • These, together with land use maps, data quality and sources of groundwater contamination using GIS techniques can provide a basis for groundwater protection programs.
  • Vulnerability maps are useful in planning and design for organizations engaged in managerial and decision making at any type of administration. Their primary purpose is to serve as guidelines for business planning and development policy and strategy for groundwater protection and management.
  • Officials can use vulnerability maps to determine where, when and how to study in detail the potential problems of groundwater. Actually assessing the vulnerability and graphic form in which it is represented, is a first step, essential for protection of groundwater as drinking water resource.
  • Although the basis for their analysis are complex, specific, these maps not only to Hydrogeologists or water and can be read and understood by all professionals involved in decision making affecting the environment.
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