The Information Center for the Environment (ICE), UC Davis, is currently developing a decision support system to facilitate watershed analyses by state resource agencies in California. ICE is using the latest in ESRI GIS to provide resource managers critical environmental data, including a desktop application with embedded GIS to facilitate watershed analysis. This tool incorporates readily available GIS data such as biotic occurrences and distributions, hydrography and geomorphology. Other relevant data are task specific, such as staff reports, water quality matrices, and site location photographs. The approach used is adaptable to assessing a broad array of conservation priorities in natural resource management.