Title: NPS model parameter uncertainty analysis for an off-stream reservoir
Authors: Kao, JJ
Hong, HJ
National Chiao Tung University
Institute of Environmental Engineering
Keywords: nonpoint source pollution;uncertainty analysis;off-stream reservoir;water quality model;drainage pattern;AGNPS
Issue Date: 1-Oct-1996
Abstract: Parameter uncertainties exert a significant effect on nonpoint source pollution (NPS) modeling results. A decision made on the basis of such results may thereby be inappropriate. In this work, the parameter uncertainty is analyzed to explore an improved modeling procedure. Drainage patterns generated from digital elevation data and rainfall are the major parameters examined. A case study for the watershed of the Posan off-stream reservoir is implemented. A significant spatial variation of NPS distribution simulated with a drainage pattern generated from varied methods is observed. The effects of rainfall randomness on the spatial loading distribution are assessed and computed based on a Monte Carlo simulation. The proposed procedure is capable of improving the quality of modeling results and the decision for an appropriate control strategy.
URI: http://hdl.handle.net/11536/997
ISSN: 0043-1370
Volume: 32
Issue: 5
Begin Page: 1067
End Page: 1079
Appears in Collections:Articles