Development of a Cluster-Analysis-Based Distributed Hydrologic Modeling System

Li He

Department of Civil Engineering, Ryerson University, Toronto, Ontario, Canada

Xiaosheng Qin

School of Civil and Environmental Engineering, Nanyang Technological University, Singapore

Guohe Huang

Faculty of Engineering, University of Regina, Regina, Canada

University of Regina Hydrologic Model (URHM) was based on the concept of cluster analysis, and capable of addressing processes of evapotranspiration, interception, infiltration, snow accumulation and ablation, interflow, base flow, and overland and channel routing. In further studies, a water-quality prediction function needs to be incorporated into the modeling algorithm; interactions among various subsystems and their components, as well as the potential impacts from future human activities and environmental conditions (e.g. available water resources and climatic factors) also need to be analyzed and reflected into the modeling framework. In a field scale, hydrologic models are used for varied purposes, such as planning and designing soil conservation practices, managing irrigation water resources, restoring wetlands, and maintaining groundwater tables; on a larger scale, they are used for flood protection, dam rehabilitation, floodplain management, water-quality evaluation, and water-supply forecasting (Wurbs, 1998). The physically-based model is one of the major types of hydrologic models, which is developed to realistically represent the hydrologic system based on physical equations (Beven, 1989, 1992).

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