Recently, evaluation of environment involving so many factors is required in relation to the global environmental problems. Prospective means of Remote Sensing for environmental investigation are applied herein from such three points of view; Vegitation Index is related to run-off and evapotranspiration using the corresponding data of the National Digital Land Information, Heat-island phenomena is mitigated by the existence of vegitation or water surface, and pattern of lake current is analyzed by turbid water flown into the lake, applying MOS-1 image.