The Japanese nation is urged to know the land condition of their own domicile after the revision of several laws concerning natural hazards. Governments have the obligation to prepare hazard maps, however, the production of the map is hard to overtake the needs. The inquiry through the internet reveals that there are many spatial information which can be used to interpret the land condition. A WebMapServer is launched by using freeware software and available spatial information. The system is used not only to present maps relating land condition but also propagate the outcome of the science such as Geography and Hydrology.
