TITLE:
Evaluation of Artificial Recharge on Groundwater Using MODFLOW Model (Case Study: Gotvand Plain-Iran)
AUTHORS:
Manouchehr Chitsazan, Ali Movahedian
KEYWORDS:
Artificial Recharge Evaluation, Modeling, MODFLOW, Groundwater, GMS
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.3 No.5,
July
28,
2015
ABSTRACT: The
managed recharge of groundwater is a stable and newfound technique which has
already produced successful results and is expected to solve many of the
problems of water resources, particularly in arid and semiarid areas. The
aquifer artificial recharge is considered as a strategy for the improvement and
development of groundwater resources and their storage to compensate for the
damage to them. In this regard, the advanced models of groundwater offer
suitable tools for the management and assessment of aquifers. The main
objective of this research is Simulation of Gotvand Plain aquifer using MODFLOW
code of GMS software is the primary objective of this research. The other
objective is assessing the artificial recharge project of Abbid-Sarbishe
located in north of Gotvand. For this purpose, the study
area was discretized in GMS software and the initial and boundary conditions
were specified. Then, the model was calibrated from September 2009 to August
2010 in an unsteady state during 12 stress periods. After the optimization of hydrogeologic
parameters, the model was validated from September 2009 to August 2010 and then
it was used to assess the artificial recharge. By analyzing the water budget
model, the behavior of piezometers and the observed data, the hydraulic of
groundwater was evaluated. The results indicate that artificial recharge has
been effective in the western parts of the project and the most effective
recharge has occurred during 2005-2006 and 2006-2007 around the piezometer G19.
This project has a positive effect on the aquifer, but due to seasonal
water-flood spreading, sedimentation, and drought in the past years, its effect
is not sufficient.