DBPapers
DOI: 10.5593/SGEM2014/B12/S2.061

HYDROGEOLOGICAL AND HYDROCHEMICAL RESEARCH OF THE VOCHA ALLUVIAL AQUIFER, KORINTHIA PERFECTURE, GREECE

G. PANAGOPOULOS, V. BEKIARI, PROF. N. LAMBRAKIS, P. AVRAMIDIS, C. NICOLAOU, D. KORONIOTIS, C. POULIOS
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 481-486 pp

ABSTRACT
Nitrate contamination of groundwater is an alarming problem in the northern coastal part of Korinthos Prefecture (Peloponnese, Greece). The Vocha alluvial aquifer system has been influenced from human activities, rendering most of the groundwater improper for human consumption. In this paper we used nitrate concentration data coupled with land uses in order to discriminate the different sources of contamination and to identify the most vulnerable zones. The hydrochemical data were processed geostatistically in a GIS platform. Vineyards are the crops responsible for the highest values of nitrate due to the nitrogenous fertilizer applications. Leakages of septic tanks contribute to the groundwater contamination, but to a lesser grade because of the low extent of the residential and industrial zones. Finally, the citrus crops have the lower contribution to the nitrate pollution of the aquifer.

Keywords: alluvial aquifer, nitrate contamination, over-fertilization, land uses, GIS