@@ In-land waters such as the reservoirs or the lakes are the main source of residential water use. To secure the water quality, monitoring the reservoir has become one crucial task closely related to the basic requirement of human being (Liu, Chang, Hsu, Tan, & Wen, 2007). There has been a lot of research interest in investigating coastal waters since over 60％ of the human population, and 90％ of the worlds fish catch are directly linked to the coastal waters (Pernetta & Milliman, 1995). As pointed out by Liu et al. (2007). The general approaches of monitoring the in-land and coastal waters rely on the analysis of water samples collected manually or from the monitoring sites. Considering the frequency and coverage of the available data, both the temporal and spatial information is limited by the insufficient support of manpower and finance. If the sampling time and locations were not appropriate, the collected data would not be able to represent the actual situation. Furthermore, the bias is inevitable to chart the water quality or estimate the concentration of pollutants for the entire regions simply from those point measurements.