Evaluation of WetSpa Model for Rainfall-Runoff Simulation in Semi-Arid and Mountainous Watersheds (Case Study: Bar Arye Watershed)

Document Type : Research Paper


Ferdowsi University of Mashhad


     A review over the rainfall-runoff studies shows that, humid regions have received worth more attention than arid and semi-arid regions. So that, in this study, the rainfall-runoff process of an arid and semi-arid  district, namely; Bar Arye Watershed with an area of about 112km2 and a mean annual precipitation of 307mm was simulated by using the spatially distributed rainfall-runoff model, WetSpa which has the ability to be connected to the geographical information systems. The period from 2003 to 2008 was applied for modeling. In the present study, according to Nash-Sutcliff criteria with the value of 0.69% for the validation phases it was indicated that the model has shown a good performance in modeling the rainfall-runoff. The rainfall-runoff coefficients of the observed and simulated values were equal to 0.59 and 0.57, respectively. This shows that the model has a good performance in estimating the values of runoff. 


1-    آذین‌مهر، م. 1391. شبیه‌سازی اثر سناریوهای تغییر کاربری اراضی بر هیدروگراف جریان حوزه آبخیز دینور با استفاده از مدل هیدرولوژیکی توزیعی – مکانی WetSpa . پایان‌نامه کارشناسی ارشد ، رشته مرتع و آبخیزداری، دانشکده مرتع و آبخیزداری دانشگاه علوم کشاورزی و منابع طبیعی گرگان، 150 صفحه.
2-    احمدی م. 1390. مدیریت و بهره‌برداری بهینه آب کشاورزی در شبکه آبیاری و زهکشی سد دز. پایان‌نامه کارشناسی ارشد، رشته آبیاری و زهکشی، دانشکده کشاورزی دانشگاه شیراز، 207 صفحه.
3-    رحمتی، ح. 1392. مدل‌سازی بیلان سطحی توسط مدل WetSpa (مطالعه موردی حوزه بار اریه). پایان‌نامه کارشناسی ارشد، رشته آبیاری و زهشکی، دانشکده کشاورزی دانشگاه فردوسی مشهد، 112 صفحه.
4-    شفیعی، م. 1388. مدل‌سازی هیدرولوژیک بیلان آب‌های سطحی توسط مدل SWAT و سیستم‌های اطلاعات جغرافیایی (مطالعه موردی حوزه آبخیز نیشابور). پایان‌نامه کارشناسی ارشد، رشته آبیاری و زهکشی، دانشکده کشاورزی دانشگاه فردوسی مشهد، 108 صفحه.
5-    یعقوبی، ف و ع. بهره‌مند. 1390. شبیه‌سازی جریان رودخانه با استفاده از مدل هیدرولوژیکی توزیعی- مکانی WetSpa در حوزه آبخیز چهل‌چای در استان گلستان. مجله پژوهش‌های حفاظت آب و خاک، 18 (3): 205-185.
6-    Al Mulla, M.M. 2005. Application of a hydrological model in a data-poor arid region catchment: a case study of Wadi Ham, United Arab Emirates. PhD Thesis, Cranfield University, England.
7-    Andersen, J., Dybkjaer, G., Jensen, K.H., Refsgaard, J.C. and K. Rasmussen. 2002. Use of remotely sensed precipitation and leaf area index in a distributed hydrological model. Journal of Hydrology, 264: 34–50.
8-    Bahremand, A., De Smedt, F., Corluy, J., Liu, Y.B., Poorova, J., Velcicka, L. and E. Kunikova. 2007. WetSpa model application for assessing reforestation impacts on floods in Margecany-Hornad watershed, Slovakia. Water Resources Management Journal, 21: 1373-1391.
10- Bahremand, A., Corluy, J., Y.B., Liu, Y.B. and F. De Smedt. 2005. Stream flow simulation by WetSpa model in Hornad river basin, Slovakia. in: J. van Alphen, E. van Beek, M. Taal (eds.), Floods, from defence to management, Taylor & Francis Group, London.
11- Beven, K. J. 2000. Rainfall-runoff modeling. John Willey and Sons Ltd, England.
12- Gebremeskel, S., Liu, Y. B. and F. De Smedt. 2002. GIS based distributed modeling for flood estimation, Jorge A. Ramirez (ed.), Proceedings of the Twenty-Second Annual American Geophysical Union Hydrology Days, April 1-4, Colorado State University,USA.
14- Morin, J. and Y. Benyamini, 1977. Rainfall infiltration into bare soils. Water Resource Research, 13(5): 813–817.
15- Nemec, J. and J.A. Rodier. 1979. Streamflow characteristics in areas of low precipitation. Proceedings of the Canberra Symposium: IAHS Publ. 128:125–40.
16- Nurmohamed. R., Naipal. S. and F. De Smedt. 2006. Hydrologic Modeling of the upper suriname. Journal of Spatial Hydrology, 1(6): 1-17.
17- Pilgrim, D. H., Chapman, T. G. and D.G. Doran.1988. Problems of rainfall-runoff modelling in arid and semi-arid regions. Hydrological Sciences Journal, 33(4):379– 400.
18- Safari, A., De Smedt, F. and F. Moreda. 2009. WetSpa model application in the Distributed Model Inter comparison Project (DMIP2). Journal of Hydrology, 418: 78-89.
19- Wheater, H., Sorooshian, S. and K.D. Sharma. 2008. Hydrological modelling in arid and semi-arid areas. Cambridge University Press.
20- Zeinivand, H. and F. De Smedt. 2010. Prediction of snowmelt floods with a distributed hydrological model using a physical snow mass and energy balance approach. Natural Hazards Journal, 54(2): 451-468.
21- Zeinivand, H. and F. De Smedt. 2009. Spatially distributed modeling of soil erosion and sediment transport at watershed scale. World Environmental and Water Resources Congress (EWRI), 17-21 May, Kansas City, USA.
22- Zeinivand, H. 2009. Development of spatially distributed hydrological WetSpa modules for snowmelt, soil erosion, and sediment transport. phD Thesis, Department of Hydrology and Hydraulic Engineering, Vrije Universiteit Brussel (VUB), Brussels, Belgium.
Volume 40, Issue 2
September 2017
Pages 75-87
  • Receive Date: 05 May 2015
  • Revise Date: 24 September 2017
  • Accept Date: 11 January 2016
  • First Publish Date: 23 August 2017