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- Title
Groundwater Modeling of Harrir plain and Mirawa valley in Shaqlawa-Harrir basins, Kurdistan Region, Iraq.
- Authors
Seeyan, Shwan; Merkel, Broder
- Abstract
With the increase in population and establishment of agricultural and industrial projects, the utilization of groundwater became more important for Kurdistan region. The increased demand for water in Kurdistan for different purposes has led to an increased consumption of groundwater from the aquifers. A three-dimensional finite-difference groundwater flow model using Visual MODFLOW was developed to investigate the change in hydrogeological conditions and to simulate the properties of the flow system under different stress scenarios for the unconfined aquifer of Harrir plain in Harrir basin and the semi-confined aquifer of Mirawa valley in Shaqlawa basin. The plain of Harrir contains two sedimentary formations of Pleistocene and Pliocene age. The aquifer is underlain by massive beds of claystone and sandstone of Miocene age. Mirawa valley consists of Pliocene and Miocene formations which were used as upper layer and Eocene formation as lower layer for modeling. The two-layer model was calibrated under steady state conditions using hydraulic parameters obtained from observation and pumping wells. The calibrated model succeeds in producing groundwater head distribution in steady state and good accordance to observed data. The standard error was estimated as 1.06 m and 2.24 m, and the normalized root mean square error (NRMSE) are 2.6 % and 2.46% for Harrir and Mirawa respectively. By increasing the pumping rate to 200% and 400% for the pumping wells, the head decreased about 6 m and 18 m in Harrir plain, and about 1 m and 2 m in Mirawa valley respectively.
- Publication
FOG - Freiberg Online Geoscience, 2015, Vol 39-42, p45
- ISSN
1434-7512
- Publication type
Academic Journal