Simulation and determination of hydrodynamic coefficients and aquifer balance with Modflow mathematical model (Case study: Kermanshah Plain)

Document Type : Original Article

Authors

1 M. Sc graduated of Water Resources, Department of Water Science and Engineering, Faculty of Agriculture, Razi University, Kermanshah, Iran.

2 Associate Professor, Department of Water Science and Engineering, Faculty of Agriculture, Razi University, Kermanshah, Iran.

3 Assistant Professor, Department of Water Science and Engineering, Faculty of Agriculture, Razi University, Kermanshah, Iran.

Abstract

In areas with dry and semi-arid climates, underground water is one of the main sources of water supply for agriculture, industry and drinking. The aim of this research is to investigate hydrodynamic coefficients, plain balance and aquifer thickness in the study area of Kermanshah through aquifer simulation using MODFLOW model. In this method, first the conceptual model and then the numerical model were built in two steady and unsteady states, then it was calibrated and validated. The results show that the maximum thickness of the aquifer in the north and northeast of the plain is about 160.96 meters, and the lowest thickness is 118.14 and 120.69 in the southwest and west of the plain, respectively. Also, the coefficient of hydraulic conductivity varies between 0.09 and 40 m/day and the coefficient of specific yield varies between 1 and 35%. Balance calculations showed the negative water balance in the western and southwestern areas of the plain and the positive balance in the northern, northeastern, and southeastern areas.

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Main Subjects

References

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Advanced Technologies in Water Efficiency
Volume 2, Issue 4
December 2023
Pages 68-87

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History

  • Receive Date: 07 December 2022
  • Revise Date: 05 January 2023
  • Accept Date: 30 January 2023

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