Identified Model Parameterization, Calibration, and Validation of the Physically Distributed Hydrological Model WASH123D in Taiwan

    Authors

    D. S. Shih;G. T. Yeh

    Comments

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    Abbreviated Journal Title

    J. Hydrol. Eng.

    Keywords

    Watershed model; Conceptual model; Hydrology; WATER; SIMULATION; FLOW; Engineering, Civil; Environmental Sciences; Water Resources

    Abstract

    Typhoon-induced flood and inundation are among the major natural disasters in Taiwan. To understand and mitigate these hydrological hazards, adequate modeling tools on watershed scales are necessary. This paper describes the calibration and validation of a river basin using a physics-based watershed model, WASH123D. The key objective is to demonstrate the enable technology of using physics-based watershed models rather than lump parameter or statistical models. An ad hoc calibration procedure based on our understanding of the target river basin was employed. Systematic parameter optimizations would be addressed in subsequent studies. The Lanyang Creek basin situated in northeastern Taiwan is chosen as the study area. Two years of data (2004 and 2005) were used to examine event-based responses and long-term predictions. Both parametric work and hydrology issues are discussed. The simulated magnitude and time lag of the flow peak are compared with the observation. The results indicate that the proposed model could indeed provide Taiwan Typhoon and Flood Research Institute with a useful protocol for research, prediction, and forecast related to watershed hydrology.

    Journal Title

    Journal of Hydrologic Engineering

    Volume

    16

    Issue/Number

    2

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    126

    Last Page

    136

    WOS Identifier

    WOS:000286219200004

    ISSN

    1084-0699

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