Simulation of Parameters Affecting the River Flow Trend using the IHACRES Rainfall-runoff Model in Future Periods (Case Study: Zolachai River)

Document Type : Research Article


1 Master of Science in Water Engineering, University of Tabriz, Iran

2 Associate Professor, Department of Water Engineering, University of Tabriz, Iran

3 Assistant Professor, Department of Water Engineering, University of Tabriz, Iran

4 Ph.D Candidate in Water Resources Engineering, University of Tabriz &Lecturer Department of Civil Engineering, Institute of Science and Technology, Iran


Considering the importance of the effects of climate change on water resources, it is useful and necessary to study the behavior of the river, especially its discharge in future periods, to manage water resources and provide solutions to adapt to the phenomenon of climate change. The purpose of this study is to investigate the effect of climate change on the discharge of the Zolachai River in West Azerbaijan Province. For this purpose, using the LARS-WG model, the precipitation and temperature values ​​of the Upper Chehriq meteorological station under different scenarios from 2021 to 2080 were predicted. Then, based on the microscale data of future precipitation and temperature, the volume of run-off output of the basin in future periods was simulated using the IHACRES rainfall-runoff model. The results of run-off forecast during future climatic periods showed that the average long-term annual run-off changes during the period 2080-2021 at the rate of 1.12 cubic meters per second (33.34%) under the RCP2.6 scenarios, 1.17 cubic meters per second (0.67 33%) under the RCP4.5 scenario and 1.37 cubic meters per second (39.42%) under the RCP8.5 scenario compared to the base period.


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Volume 8, Issue 1
April 2021
Pages 177-193
  • Receive Date: 28 September 2020
  • Revise Date: 18 February 2021
  • Accept Date: 18 February 2021
  • First Publish Date: 08 March 2021