Investigating the performance of SWAT and IHACRES in simulation streamflow under different climatic regions in Iran

Main Article Content

Abazar Esmali
https://orcid.org/0000-0001-9227-0419
Mohammad Golshan
https://orcid.org/0000-0002-1100-0626
Ataollah Kavian
https://orcid.org/0000-0003-1767-0708

Abstract

It is often reported that simpler models, due to their low parameter requirements, perform better than more complex models. To test this, the current study compared a simple rainfall-runoff model (IHACRES) with a complex watershed model (SWAT). Based on these two approaches, six models were developed for three climatically distinct (arid, semi-arid and semi-humid) watersheds in Iran. The coefficient of determination (R2) and the Nash-Sutcliffe model efficiency coefficient (NS) were calculated in each case. In arid, semi-arid, and semi-humid watersheds the SWAT model (R2 = 0.52, 0.68, 0.66; NS = 0.54, 0.63, 0.64, respectively) outperformed the IHACRES model (R2 = 0.37, 0.70, 0.57; NS = 0.22, 0.57, 0.56, respectively) for the same respective climate zones. Overall, SWAT performed better than IHACRES, although both models had acceptable performances in the semi-arid and semi-humid watersheds. In the arid watershed, the IHACRES model performed poorly compared to SWAT.

Downloads

Download data is not yet available.

Article Details

Author Biographies

Abazar Esmali, Department of Natural Resources, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran

Abazar Esmali Ouri currently works at the Department of Watershed Management, Mohaghegh Ardabili University. Abazar does research in Soil and water conservation, Geomorphology, Hydrology and Remote Sensing. Their current project is climate change effects.

Mohammad Golshan, Department of Natural Resources and Watershed, Astara, Gilan, Iran.

Mohammad Golshan currently works at the Department of Natural Resources and Watershed, Astara, Gilan, Iran. Mohammad does research in Regional Water Company and Mohaghegh Ardabili university. Their current project is 'Sediment and runoff yeild in central of Ardabil province.'

Ataollah Kavian, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

Ataollah Kavian currently works at the Department of Watershed Management, Sari Agricultural Sciences and Natural Resources University. Ataollah does research in Soil and water conservation, Geomorphology, Hydrology and Remote Sensing. Their current project is 'Sediment Quality.

Sharing on:

PLUMX metrics