Sediment Yield Simulation in Upper Ayeyarwady Basin

Authors

  • Su Wai Aung Department of Civil Engineering, Mandalay Technological University, The Republic of the Union of Myanmar
  • Nilar Aye Department of Civil Engineering, Mandalay Technological University, The Republic of the Union of Myanmar

Keywords:

MUSLE, Sediment yield, SWAT, Watershed delineation.

Abstract

This study was undertaken to examine the applicability of Soil and Water Assessment Tool (SWAT) model for the Upper Ayeyarwady Basin for simulating sediment yield. The SWAT model is hydro-dynamic and physically-based model for the application in complex and large basins. The required input data for this study were Digital Elevation Model (DEM) with spatial resolution of 30 m x 30 m, land use/land cover map and soil map. And also the hydro-meteorological data around the basin were used. The model has been calibrated and validated using observed sediment data of eight years at the basin outlet (Sagaing). The automated calibration process was used to calibrate the model parameters using time series data from 2003 to 2007. Data from 2008 to 2010 were used to validate the model using the input parameter set. The model predicted the annual sediment in the watershed as 272.8 million ton per year. The average annual values of sediment yield for Nash-Sutcliffe efficiency (NSE) and R2 were found to be 0.89 and 0.82, respectively for calibration and 0.88 and 0.80, respectively for validation, which were within the allowable limit. 

References

[1] Abbaspour, K.C. 2014. SWAT-CUP 2012: SWAT Calibration and Uncertainty Programs — A User Manual: Swiss Federal Institute of Aquatic Science and Technology, Switzerland.
[2] Alansi, A. W., Amin, M. S., Abdul Halim, G., Shafri, H. Z., & and Aimrun, W. (2009). Validation of SWAT model for stream flow simulation and forecasting in Upper Bernam humid tropical river basin, Malaysia. Hydro Earth Syst. Sci. Discuss., 7581-7609.
[3] Arnold, J.G., J.R. Kiniry, R. Srinivasan, J.R. Williams, E.B. Haney, and S.L. Neitsch. 2011. Soil and Water Assessment Tool input/output file documentation, Version 2009. TWRI Tech. Rep. TR-365. Texas Water Resour Inst., Texas A&M Univ., College Station.
[4] D. Matamoros, E. Guzman, J. Bonini and P.A. Vanrolleghem, “AGNPS and SWAT Model Calibration for Hydrologic Modeling of an Ecuadorian River Basin under Data Scarcity,” IWA Publishing, London, UK, ISBN: 184339510X, 2005.
[5] Maski, D., K.R. Mankin, K.A. Janssen, P. Tuppad, and G.M. Pierzynski. 2008. Modeling runoff and sediment yields from combined in-field crop practices using the Soil and Water Assessment Tool. J. Soil Water Conserv. 63:193–203. doi:10.2489/jswc.63.4.193.

Downloads

Published

2017-01-26

How to Cite

Aung, S. W., & Aye, N. (2017). Sediment Yield Simulation in Upper Ayeyarwady Basin. American Scientific Research Journal for Engineering, Technology, and Sciences, 27(1), 405–418. Retrieved from https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/2578

Issue

Section

Articles