The Monitor of Drinkable Water Resources in the Vedea River Inferior Hydrographic Basin and GIS applications

ABSTRACT - The Monitor of Drinkable Water Resources in the Vedea River Inferior Hydrographic Basin and GIS applications. The Vedea River has its sources in the piedmont area. Drinkable water is available only under the form of groundwater and is exploited by small and medium depth wells.The paper is based on the data from the well drilling, supplied by the state hydrogeological network, managed by the NIHWM. The database is made of both data regarding the placement of wells, and the technical and lithological characteristics, the aggregate grading of the aquifer, discharges, unevenness, data regarding piezometric levels, temperatures, but also data regarding physical-chemical analyses. Based on these primary data, I made maps resulted from their processing: hydrogeological map, water pollution sources, hydroisohypses. In the Vedea River hydrographic basin, geological conditions are favorable for water resources forming. This is why, through scanning and digitization, I cartographically represented the influence of geological layers on drinkable water resources.In the analysis of water resources, topography has also an important role in which, with the help of GIS techniques and through the processing the level curves, the MDT resulted. The main morphometrical parameters can also be determined based on the MDT: slope, mean basin altitude, slope exposure, 3D visualizations, obtaining a much more complete hydrographic network compared to the one existent at a survey level.

Keywords: drinkable water, resources, Vedea river, geology, hydrographic network