Ecology, Environment and Conservation Paper

SIMULATION OF GHESHLAGH DAM CONSTRUCTION EFFECT ON THE GHESHLAGH AQUIFER USING MODFLOW

Mohammd Chia Khani, Seyed Jamil Ghaderi and Saeid Shabanlou

Abstract

In this research, quantitative simulation of Gheshlaghaquifer is conducted using Visual Modflow in order to investigate the effect of Gheshlagh Dam construction on the aquifer. First, required data was collected from related organizations and processed to be importable to the program. The first step of modeling is extracting terrain data from GIS maps and then importing the required packages of the program. This simulation was performed into two stages including quantitative simulation of the aquifer without applying the dam and simulation of the aquifer with applying the dam and finally extracting the drawdown graphs for two stages. After extracting and comparison of the graphs, it is concluded that Gheshlagh Dam is acting as an artificial recharge source and the water table level in presence of the dam has a better situation than without the dam. However, the aquifer water budget in both conditions is estimated negative and proper decisions for long term operation from the aquifer should be considered.