Recent research in Yellowstone National Park has indicated that the thermal features contain microbiological diversity with the potential for remarkable scientific and economic impact. The cataloging and mapping of microorganisms in extreme environments is of strategic importance for regional and national resource management and fundamental scientific research. For resource preservation and utilization, scientists need to understand microbiological diversity and the associated habitats. Scientific research has been hampered by the difficulty of retrieving information, the timely posting of scientific data, and the inadvertent disruption of studies by other investigators selecting the same field sites. For resource utilization, the NPS has a plan to encourage commercial microbiological research interests in the National Parks. Yet, there is no formal means to catalog these microbial resources. This project is developing an Internet based relational database and GIS application for mapping and cataloging microbial biodiversity data and associated geochemical/hydrological attributes.