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At present, desertification becomes a problem around Loess Plateau. Planting, as an effective measure to prevent land desertification will be performed in this region. On this purpose, it is essential to keep the water resource under control. In this paper, based on the result of local observation and field survey, we considered the water income and expenditure of study basin which locates at upstream in Loess Plateau. Thereby, for study basin, annual water income and expenditure was clarified basically and annual available quantity of water was also estimated. The result of this study is useful for correlative studies of water resource in the same region.