As global warming has caused the number of abnormal changes in climate to increase throughout the world, much damage has occurred recently in Korean Peninsula which results from unexpected heavy rains and floods from typhoons to the changes in soil moisture and water tends to increase gradually. Water resources are limited in rural areas with limited water resources in order to maintain efficient system of using GIS is necessary to prepare a water supply system. In this study, as part of an efficient water supply, Distributed in rural areas and small reservoirs, such as targeted aerial photography and LiDAR data is to use multi-dimensional geospatial data. The purpose of this study is to offer development of reservoir water management system for the sustainable stream maintatenance and prevention streamflow depletion of small stream.