An attempt was made to construct a prototype database system for water temperature using geographical information such as the attributes of monitoring points in Japan and the surrounding sea, and World Databank II. First, we collected sample data on temperature and information such as the location, attributes and observation systems of stations for monitoring of inland water and seawater temperature through questionnaires in Japan. Secondly, datafiles for the attributes and factual data were constructed. Finally the retrieval system was developed using parameters such as the locality number of each point, the latitude and longitude of the point, frequency of data sampling, method of temperature sensing, kind of sensor, sensor depth, media for raw data and the frequncy of data recording.