The Landscape Fire and Resource Management Planning Tools Prototype Project, or LANDFIRE Prototype Project, required that the entire array of wildland fuel characteristics be mapped to provide fire and landscape managers with consistent baseline geo-spatial information to plan projects for hazardous fuel mitigation and to improve public and firefighter safety. Fuel maps were some of the core deliverables of the LANDFIRE Prototype Project. The LANDFIRE approach for mapping fuel combined information from the LANDFIRE reference database (LFRDB) (Caratti and others, Ch. 4), biophysical gradient layers (Holsinger and others, Ch. 5), maps of potential vegetation (Frescino and Rollins, Ch. 7), and maps of vegetation composition and vegetation structure (Zhu and others, Ch. 8) to produce the entire suite of geo-spatial data for predicting the behavior and effects of wildland fires across the United States.