FEMA Flood Map Service Center: Hazus
FEMA’s GIS Software and Data for Estimating Potential Losses from Disasters
Hazus is FEMA’s nationally standardized risk assessment tool, offering advanced methodologies for estimating potential losses from natural disasters such as floods, hurricanes, earthquakes, and tsunamis. Designed using Geographic Information Systems (GIS) technology, Hazus provides the tools and data necessary to determine important insights for disaster planning, mitigation, and emergency response.
For more information about the Hazus program, please visit the Hazus home page.
Latest Release: Hazus 7.0
Hazus 7.0 is now available and represents a major upgrade, including:
- Integration with ArcGIS Pro, providing users with advanced GIS capabilities, an improved user interface, and modern tools for hazard analysis.
- Simplified workflows for flood and hurricane models.
- Improved flood module methodologies by implementing a depth limited approach for coastal flood zone designation.
- More flexible average annualized loss (AAL) calculation for flood analyses by allowing users to leverage any 3 or more multi-return period depth grids.
Hazus 7.0 marks a major milestone as the first of many releases in ArcGIS Pro.
While some features from Hazus 6.1 on ArcMap may not yet be available, we're actively working to integrate key functionalities into future releases. We are committed to providing the risk assessment community with accessible, reliable tools that meet your evolving needs.
Join us on this journey as we strive to deliver the best possible natural hazard risk assessment software and stay informed about the latest developments by signing up for our email updates.
Steps to use Hazus 7.0
- Download Hazus 7.0: Download and extract the "HazusPro_App" media and save it to a known file location.
- Review Release Guides: Open and read the "Hazus 7.0 Getting Started Guide" to install and run Hazus. The "Hazus 7.0 Release Notes" are available for more detailed information.
Access to Inventory Data
With Hazus 7.0, we’ve made it easier to get started by taking care of all the back-end database setup. All you need to do is open Hazus and begin using the software. There is no longer a need for users to manually download and extract Hazus databases, like in previous releases.
For users interested in exploring Hazus inventory data without running the software, the Hazus Inventory National Database is available. This dataset compiles all baseline inventory data for the continental United States, Alaska, Hawaii, and U.S. Territories into a single, easily accessible file. Download the data here.
What’s the Difference between Hazus 7.0 and Hazus 6.1?
Hazus 6.1 was built as an extension of ArcMap, which is in Mature Support. More information can be found here.
Hazus 7.0 is built as an extension of ArcGIS Pro. A table covering the general functionalities available in both is below.
For detailed information about what is available in Hazus 6.1 and Hazus 7.0 please refer to the release notes available with each download, or contact the Hazus Help Desk if you have additional questions.
General Functionality Available in Hazus 6.1 and Hazus 7.0
| Feature | Hazus 6.1 | Hazus 7.0 |
|---|---|---|
| Software Compatibility | ArcMap Desktop v10.8.2 | ArcGIS Pro v3.2 or v3.3 |
| Hurricane Analysis | Available; Requires the Hazus open-source Hurricane Hazard Import Tool (HHIT) for HURREVAC analysis | Available only for HURREVAC analysis (in software) |
| Flood Analysis | Available to users with or without hazard data | Available to users with hazard data (i.e., flood inundation depth grids) |
| Average Annualized Loss (AAL) | Available for earthquake, flood, and hurricane models | Available only for the flood model, specifically for users with hazard data (i.e., any 3 or more multi-return period depth grids) |
| Probabilistic Analysis | Available for earthquake, flood, and hurricane models | Available only for the flood model, specifically for users with hazard data (i.e., depth grids representing flood probability intervals) |
| Earthquake Analysis | Available | Not yet available |
| Tsunami Analysis | Available | Not yet available |
| Flood Depth Grid Creation | Available | Not yet available |
| Reports | Available | Not yet available |
Download and Install Hazus 6.1 (for ArcMap)
Since Hazus 7.0 does not have all the features currently available in Hazus 6.1 today, we will continue to support this version until it is no longer permitted.
Hazus 6.1 software and state datasets are available free of charge below.
For additional guidance, watch our videos on how to download and install Hazus. If you need technical support, please contact the Hazus Help Desk.
Hazus 6.1 Installation Instructions:
- Make sure your system meets the system requirements listed in the graphic below. This includes installing ArcGIS Desktop 10.8.2 and enabling your license and spatial analyst extension.
- Uninstall all existing versions of Hazus using the "Hazus 6.1 Uninstallation Guide" available with the "Hazus_App" media download.
- Download the Hazus 6.1 and follow the installation steps in the "Hazus 6.1 Installation and Testing Guide". For additional information, check out our Hazus: Getting Started Video Playlist on YouTube.
- Download Hazus 6.1 state inventory data. All state databases downloaded prior to the Hazus 6.1 release must be replaced with new state databases for Hazus to run successfully.
Hazus 6.1 Software Requirements
Select the "Hazus Application" link below to download Hazus 6.1 for ArcMap.