Heshmatpoor, Ali and Sulaiman, Wan Nor Azmin and Zakaria, Mohamad Pauzi and Idris, Azni (2009) Identification Runoff Source Area in Tropical Watershed. In: Proceedings of Postgraduate Qolloquium First Semester 2009/2010, 26-29 October 2009, Faculty of Enviromental Studies, Universiti Putra Malaysia.
Models are needed to describe how nonpoint source area of a watershed affect the rainfall-runoff process in tropical region, yet little spatially distributed data exist to develop such models. Hence, a coupled GIS-event base storm runoff model in a variable source area is developed. The model use grid-formatted map data supported by the Geographical Information System (GIS) and generates distributed results for runoff depth, discharge and coefficient of saturated area fraction. The GIS grid-based distributed CN-VSA method was evaluated for two (W1= 2.29 Km2 , W2 = 0.88 Km2 ) small watersheds located in tropical region in Malaysia. The average Nash-Sutcliffe (1970) efficiency for predicting saturated area fraction and runoff within and outlet of the watershed (W1) using verification between observed and model simulated data for fifteen storm events were (R2 =0.99) and (R2 =0.86), respectively. Coefficients indicated a good efficiency for model prediction. Since, the model proposed was found to be suitable for prediction of saturated area fraction (Af) and sources area of runoff, the proposed model was applied for unmonitored sub-watersheds W11, W12, W13 (of watershed W1) and watershed W2, respectively
|Item Type:||Conference or Workshop Item (Paper)|
|Keyword:||Distributed curve number, Event storm runoff, Tropical watershed|
|Faculty or Institute:||Faculty of Environmental Studies|
|Deposited By:||Khairil Ridzuan Khahirullah|
|Deposited On:||15 Apr 2010 08:33|
|Last Modified:||27 May 2013 07:23|
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