Groundwater Flow-Modeling and Sensitivity Analysis in a Hyper Arid Region

Groundwater modelling is particularly challenging in arid regions where limited water recharge is available. A fault zone will add a significant challenge to the modelling process. The Western Desert in Iraq has been chosen to implement the modelling concept and calculate the model sensitivity to th...

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Bibliographic Details
Main Authors: Sameh W. H. Al-Muqdadi, Rudy Abo, Mohammed O. Khattab, Firas M. Abdulhussein
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/12/8/2131
Description
Summary:Groundwater modelling is particularly challenging in arid regions where limited water recharge is available. A fault zone will add a significant challenge to the modelling process. The Western Desert in Iraq has been chosen to implement the modelling concept and calculate the model sensitivity to the changes in aquifer hydraulic properties and calibration by researching 102 observations and irrigation wells. MODFLOW-NWT, which is a Newtonian formulation for MODFLOW-2005 approaches, have been used in this study. Further, the simulation run has been implemented using the Upstream-Weighting package (UPW) to treat the dry cells. The results show sensitivity to the change of the Kx value for the major groundwater discharge flow. Only about 7% of the models from the region can be irrigated utilizing greenhouses supported by external recharge.
ISSN:2073-4441