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Natural Hazards Risk Assessment Program (NHRAP)

The Natural Hazards Risk Assessment Program (NHRAP) provides risk assessment data, tools, and analyses to support FEMA strategic goals and the development of risk communication tools for all phases of emergency management.  The NHRAP focuses on translating natural hazard data into actionable information to support transparent and understandable communication of geospatial risk data, community resilience, loss modeling data, and comprehensive multi-hazard risk profiles.  The NHRAP team serves as risk assessment subject matter experts within FEMA and actively engages public and private sector partners.

The NHRAP team also manages Hazus, FEMA’s loss modeling software. For more information about Hazus please the Hazus section below.

For more information about the NHRAP, please email

NHRAP Publications

The NHRAP develops documentation and publications in support of the latest methods for hazard loss estimation, hazard risk data development, and risk assessment approaches. 

Access and download all NHRAP publications from the FEMA Library.

Hazus: FEMA's Methodology For Estimating Potential Losses from Disasters

Hazus is a nationally applicable standardized methodology that contains models for estimating potential losses from earthquakes, floods, tsunamis, and hurricanes. Hazus uses Geographic Information Systems (GIS) technology to estimate physical, economic, and social impacts of disasters. It graphically illustrates high-risk locations due to earthquake, hurricane, flood, and tsunami.  Users can then visualize the spatial relationships between populations and other more permanently fixed geographic assets or resources for the specific hazard being modeled, a crucial function in the pre-disaster planning process.

Hazus is used for mitigation and recovery, as well as preparedness and response. Government planners, GIS specialists, and emergency managers use Hazus to determine losses and the most beneficial mitigation approaches to take to minimize them. Hazus can be used in the assessment step in the mitigation planning process, which is the foundation for a community's long-term strategy to reduce disaster losses and break the cycle of disaster damage, reconstruction, and repeated damage. Being ready will aid in recovery after a natural disaster.

Potential loss estimates analyzed in Hazus include:

  • Physical damage to residential and commercial buildings, schools, critical facilities, and infrastructure;
  • Economic loss, including lost jobs, business interruptions, repair, and reconstruction costs; 
  • Social impacts, including estimates of shelter requirements, displaced households, and population exposed to scenario floods, earthquakes, and hurricanes, and tsunamis

As the number of Hazus users continues to increase, so do the types of uses. Increasingly, Hazus is being used by states and communities in support of risk assessments that perform economic loss scenarios for certain natural hazards and rapid needs assessments during hurricane response. Other communities are using Hazus to increase hazard awareness.

Download Hazus Today: Users can download the Hazus software for free from the  FEMA Flood Map Service Center (MSC) at

Have any interesting Hazus research or success stories to share? Want to get involved with the Hazus program by attending the monthly National Hazus User Group call? Reach out to the Hazus Outreach Team at with questions, comments, or to be added to the monthly call invitation.

Sign up to receive updates regarding the Hazus program, training opportunities, and conferences.

Last Updated: 
06/25/2019 - 17:16