Abstract
Fresh water in lake has been widely used as valuable water resources in various industries. It is indispensable to investigate and analyze the present situation of lake water quality and quantity for the establishment of sound hydrologic water cycle in a lake basin. The objective of this study is to develop the estimation method of evaporation from a deep lake, Lake Ikeda, Kagoshima. The short and long wave radiation, which are estimated from the observed meteorological data in the vicinity of the lake, agree well with the measured one at the study site. The calculated vertical profiles of lake water temperature and the lake surface temperature are also in good agreement with the measured data. It is concluded that the calculation scheme of evaporation from Lake Ikeda has been established and will be useful for a discussion of the hydrologic budget of the lake as fresh water resources.
