Department of Energy (DOE) Order 420.1c requires that all DOE nuclear facility sites periodically review their Natural Phenomena Hazard (NPH), including earthquake, wind, flood and volcanic hazards, just list a few. Any significant changes to data, model and methodology related to a site NPH could lead to a site hazard reassessment and then potential design changes. The periodic review and possible following reassessment relies significantly on understanding site-specific NPH information and its changes. Therefore, establishing a NPH database and updating it continuously will ensure the availability of up-to-date NPH information for each nuclear facility site.         Defense Nuclear Facilities Safety Board (DNFSB) provides independent analysis, advice, and recommendations to DOE on adequate protection of public health and safety at defense nuclear facilities. Establishing a NPH database will enhance the Board’s safety oversight of DOE nuclear facilities. Because NPH data are geospatial data, NPH database will be built upon a Geographic Information System (GIS) platform. Specifically, the GIS NPH database will allow the staff member understanding the hazard in an integrated manner.  The database will also  reduce future data requests to various DOE sites and their contractors and will ensue knowledge transfer among the Board staff members and also to prioritize site reviews based on estimated hazard change. In sum, the GIS NPH database will enable the staff member’s oversight of DOE’s NPH periodic review more proactive, informative and effective. The database can also be an effective tool for assisting the staff’s review of emergency preparation and hazard mitigation when NPH events or human related events occur.