Investigation of Snow Impact on Runoff Simulation in Catchment (Case Study: Bar Catchment, Neyshabour)

Document Type : Original Article

Authors

1 Assistant professor Department of Water Science and Engineering, Shahr-e-Qods Branch, Islamic Azad University., Tehran., Iran.

2 Assistant professor Department of Water Science and Engineering, Ferdoss Branch, Islamic Azad University., Mashhad., Iran.

Abstract

Snow is one of the main elements of hydrological cycle of the mountainous basins. In the basins, snow runoff plays the main role of the river flows. Although there are snowfalls in the eastern highlands of the country, the effect of this kind of hydrological element is different from the western areas. The goal of the study is to investigate on the effect of simulated runoff on the flowing water balance parameters in the BAAR NEYSHABOUR basin. To reach the goal, the counted discharge of ARIYE hydrometric station located on BAAR River is used and to count the rainfall, BAAR-ARIYE evaporation center is utilized. Counting term is about 30 years. Water years of 1975 to 1989 for simulating and calibration and the verification are happened from the years of 1995 to 2009. The consequences show that, despite the simplicity, WASMOD model is able to simulate the runoff even by low receiving data. So the mentioned model can be used in the basins with the low available data. The capability of the model was studied in two ways, and the results suggested that the model with the effect of snow is more related to the reality. Modeling is possible even with no regard to the snowfall. Basic runoff conduction under the effect of the snow is nonlinear as well. 

Keywords

References

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Iranian Journal of Irrigation & Drainage
Volume 8, Issue 4 - Serial Number 48
November and December 2014
Pages 857-864

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