| Summary: | 碩士 === 逢甲大學 === 環境工程與科學所 === 93 === To fully make use of the water resources, the Central Government on Taiwan has designed and managed most of the reservoirs as multi-purpose projects to include flood control, irrigation, water supply, hydro power, recreation, and fishery. These objectives have direct impacts on water quality of reservoirs. Water quality of a reservoir is affected by the pollution from point sources (human activities- sewage and industrial waste), non-point sources (overflow and watershed flows into the reservoir), and pollution released within the reservoir itself. It is imperative to improve and maintain water quality of reservoirs in Taiwan with limited resources and funding. The model developed in this research makes use of grey relational analysis and multiple criteria decision making (MCDM) for prioritizing reservoir management strategies. The study also uses spatial distribution of chlorophyll-a in IKONOS image to identify contamina- tion zones. The research selects Sun Moon Lake, a multi-purpose reservoir, to demonstrate model concept and its feasibility. The results of the Sun Moon Lake application show that first selection is the lake area near Sheng-A: Camping Ground; next come LaLu Island, water supply withdrawal site, and lake area near Der Hua Sher. It also can serve as guidance for the management of other reservoirs in Taiwan and can provide information for the local tourist bureaus and the Environmental Protection Administration in promulgating future water quality standards for reservoirs.
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