Calculation of phreatic water reserves from Mostistea Plain using GIS technology

ABSTRACT. - Calculation of phreatic water reserves from Mostistea Plain using GIS technology. Phreatic water reserves means the quantity of phreatic water from a phreatic water-bearing stratum. The volume of phreatic water from a phreatic water-bearing stratum presents important variations in timp meaningful because of the drainage through springs and supplying through precipitations. The water loss and accretion are translated in the surface phreatic water stratum oscillations, oscillations which are staying on the basis of the calculation of phreatic water reserves from Mostistea Plain In this way, there have been evaluated the permanent reserves, the regularization reserves, the total reserves and the exploitable reserves of phreatic water on the basis of national phreatic monitoring network wells from NIHWM administration. These reserves are correlated with the variation amplitudes of the phreatic level and they are meaningful influenced by the precipitations for the interstream area and by the rivers level for floodplain area. The main objective of using GIS technology consist in conciveing of a geospatial database for calculation of phreatic water reserves from Mostistea Plain which offers the automatization advantage of some operations which implies complicated mathematical algorithms, but also because the ease of the outcomes interpretations.

Keywords: phreatic water, reserves, Mostistea, phreatic water stratum