This study was carried out to provide environmental information using geographic information system for the environmental manager engaged in governmental office. Point and nonpoint sources were classified by each small watershed and an administrative district. ArcView and ERDAS software were used to develop environmental information system. Small watershed was extracted into the DTEM using HEC-geoHMS which is ArcView extension. Study area was divided into 7 small watershed. Point sources were constituted as cattle, milk cattle, swine, and poultry. Land use was divided into forests, rice paddies, residential sites et al. User interface was designed to search information easily for the nonprofessional GIS users.