Journal of Range and Watershed Managment

Simulating discharge and sediment production using SWAT in Chehelchai Watershed of Golestan Province

Document Type : Research Paper

Authors

Akram Arefi Asl 1
Ali Najafinejad 2
Farshad Kiani 3
Abdolrassoul Salmanmahiny 4

1 M.Sc. Postgraduate, Gorgan University of Agricultural Sci. & Natural Resources, Gorgan, Iran

2 Assistant professor, Watershed management department, Gorgan University of agricultural sciences and natural resources, Gorgan, Iran

3 Assistant professor, Soil sciences department, Gorgan University of agricultural sciences and natural resources, Gorgan, Iran

4 Associate Professor of Environmental Sciences, Gorgan University of Agricultural Sci. & Natural Resources

https://doi.org/10.22059/jrwm.2013.36518
Abstract
Runoff and sediment measurement is difficult in mountain watershed because of many different problems such as time and financial limitations. So using simulation model is necessary in this regard. Accuracy and precision evaluation of models for different watershed of Iran is necessary. The aim of this study was the evaluation of SWAT model efficiency in simulation of runoff and sediment yield in Chelchay watershed in Golestan province, Iran and also calibration and validation of SWAT. SUFI2 algorithm was used for calibration and validation. Nash-Sutcliff for calibration period (2001-2005) and validation period (2006-2009) for average daily discharge was 0.5 and 0.4 respectively and for sediment concentration was 0.71 and 0.92 that is good according to past research results. Because SWAT is complex and integrated model and can be used as a management tool in watershed management so it is suggested that it would be used for evaluation of management activities effects in Chelchay watershed.

Keywords

calibration
Chehelchai watershed in Golestan province
SWAT
SUFI2
validation
Journal of Range and Watershed Managment
Volume 66, Issue 3 - Serial Number 3
Autumn 2013
Pages 433-446

  • Receive Date 10 April 2012
  • Revise Date 11 December 2013
  • Accept Date 12 March 2013
  • Publish Date 23 October 2013

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