An Estimation of InfoWorks PDM Rainfall-Runoffmodel Parameters in Mae Wang Thong River Basin

Authors

  • วิษุวัฒก์ แต้สมบัติ
  • สุทธิพงษ์ ฉลวย

Keywords:

Rainfall-Runoff Model,, InfoWorks PDM Model,, Sensitivity Study,, Mae Wang Thong River Basin

Abstract

This study is an application of InfoWorks PDM rainfall – runoff model to calculate runoff of Mae Wang Thong Basin using data from telemetry stations which measured 15-minutes rainfall and water level real-time data. The model calibration and verification at TNwt.15 and TNwt.6 station during June - October 2013 found that the statistical indexes of PDM model has r equal to 0.87 and 0.85, respectively whichareillustrated very good correlation. While, the precision and accuracy of model result, RMSE and NSE remain acceptable. The sensitivity analysis of PDM model parameters at TNwt.6 telemetry stationwas then carried out by considering the change of both volume and peak flow hydrograph affected from the change of each model parameter. It found that four model parameters are sensitive than others namelyrainfc, k1, bg and kg.

References

[1] Royal Irrigation Department, “Study and Installation of Telemetry System in Mae Wang Thong River Basin for Flood Forecasting and Warning System,”2010.
[2] K. Khantiyawichai,“An Application of InfoWorks RSmodel for Flood Estimation in Chi River Basin,”Master Thesis Department of Water Resources Engineering, Khon Kaen University, 2004.
[3] R. Homvichein, “An Application of InfoWorks PDM model for Streamflow Estimation in Chi River Basin,”Master Thesis Department of Water Resources Engineering, Khon Kaen University, 2006.
[4] S. Chaluay,“The Study on Real Time Flood Forecasting in the Mae Wang Thong Basin,” Master Thesis Department of Irrigation Engineering, Kasetsart University, 2014.
[5] HR Wallingford Ltd, “InfoWorks RS and FloodWorks ISIS Flow User Manual,” UK, 1998.

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Published

2020-06-19

How to Cite

[1]
แต้สมบัติ ว. . . and ฉลวย ส. . ., “An Estimation of InfoWorks PDM Rainfall-Runoffmodel Parameters in Mae Wang Thong River Basin”, Eng. & Technol. Horiz., vol. 33, no. 1, pp. 54–59, Jun. 2020.

Issue

Vol. 33 No. 1 (2016): January - March

Section

Research Articles

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