Comparing The Performance Of Two Hydrological Models, IHACRES And GR2M For Simulating Monthly Flow Of Dareh-Takht Basin

Document Type : Research Paper


Behbahan ‌Khatam Alanbia


Modeling of the rainfall-runoff process is important. The Results of the rainfall-runoff models have been used directly on issues such as water resource management, flood control and design of hydraulic structures. According to variety of accessible rainfall runoff models, selecting an appropriate model for a basin is important in terms of productivity and water resources management. In this study the performance of two rainfall–runoff models, IHACRES and GR2M in simulation of monthly flow were evaluated in Darhe Tkaht basin between 2000 and 2013 time. The models in the study region were calibrated and validated. The error between observed and simulated flow values was estimated based on the criteria Nash, root mean square error and the total flow volume error. Simulations is indicative satisfactory performance of two models in monthly flow simulation. In addition, the results show that the HACRES model simulate monthly flow with The Nash coefficient 0.7 and RMSE 0.56, better than the GR2M model.


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Volume 40, Issue 2
September 2017
Pages 147-158
  • Receive Date: 26 October 2015
  • Revise Date: 24 September 2017
  • Accept Date: 10 April 2016
  • First Publish Date: 23 August 2017