TY - JOUR T1 - Evaluating Groundwater vulnerability in Ghazvin Plain TT - ارزیابی آسیب‌پذیری آب‌های زیرزمینی دشت قزوین JF - jeg JO - jeg VL - 1 IS - 3 UR - http://jeg.khu.ac.ir/article-1-313-en.html Y1 - 2004 SP - 255 EP - 270 KW - Evaluation KW - Vulnerability KW - Index KW - DRASTIC KW - groundwater KW - Ghazvin plain N2 - (Paper pages 255-270) The groundwater protection is important in order to have a good management of water resources. The Ghazvin plain situated in west of Tehran, Iran has a critical situation in which the groundwater level declines and aquifer pollution has been observed in recent years. In this research, for evaluating the groundwater vulnerability, DRASTIC index has been used for this plain. Then, a Geographic Information System (GIS), ILWIS has been used to create a groundwater vulnerability map. The results of this study estimated DRASTIC value to be in the range of 35-108 using general DRASTIC value, almost 11% of the study area was recognized to have low feasibility, 43% moderate and 37% high and 10% very high feasibility for pollution. The DRASTIC results show a good adaptation between increasing the nitrate rate and the DRASTIC index M3 ER -