Identification Runoff Source Area in Tropical Watershed

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.

[img] PDF
804Kb

Abstract

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
ID Code:5594
Deposited By: Khairil Ridzuan Khahirullah
Deposited On:15 Apr 2010 08:33
Last Modified:27 May 2013 07:23

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 15 Apr 2010 08:33.

View statistics for "Identification Runoff Source Area in Tropical Watershed "


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.