The National Risk Index (NRI) and its associated data are meant for planning purposes only. This tool was created for broad nationwide comparisons and is not a substitute for localized risk assessment analysis. Nationwide datasets used as inputs for the NRI are, in many cases, not as accurate as available local data. Users with access to local data for each NRI risk factor should consider substituting the NRI data with local data to recalculate a more accurate risk index. If you decide to download the NRI data and substitute it with local data, you assume responsibility for the accuracy of the data and any resulting data index. Please contact the NRI team if you would like to discuss this process further. The methodology used by the NRI has been reviewed by subject matter experts in the fields of natural hazard risk research, risk analysis, mitigation planning, and emergency management. The processing methods used to create the NRI have produced results similar to those from other natural hazard risk analyses conducted on a smaller scale. The breadth and combination of Geographic Information Systems (GIS) and data processing techniques leveraged by the NRI enable it to incorporate multiple hazards and risk factors, manage its nationwide scope, and capture what might have been missed using other methods. The NRI does not consider the intricate economic and physical interdependencies that exist across geographic regions. Keep in mind that hazard impacts in surrounding counties or census tracts can cause indirect losses in your location regardless of your location's risk profile. Nationwide data available for some risk factors are rudimentary at this time. The NRI will be continuously updated as new data becomes available and improved methodologies are identified.

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