Expanding wildfire hazard mapping needs are satisfied by modification of the U.S. Forest Service's TOPOGO computer program to produce a versatile and flexible system called TOPOMAP. Full-sized pen plots of critical slope and aspect combinations can be generated in several colors to overlay USGS 7.5-minute quadrangle maps. Time and cost studies demonstrate accuracy, timeliness, flexibility, standardization, and cost advantages of a 2.5-acre computer approach versus the existing manual system. Tests with the a 5-acre cellular system show economyis achieved at the cost of less accuracy than the manual system. A common state natural resource inventory data system is needed, as well as an automated information systemfor keeping the inventory updated. Inventory and benchmark data requirements of such a system are identified.