ShakeMap-Based HAZUS-MH Loss Estimation Maps: Intermountain Seismic Belt, Utah

Federal Emergency Management Agency Mitigation Directorate

This Federal Emergency Management Agency (FEMA)–sponsored project produced a catalog of loss estimation map products based on an earthquake scenario called ShakeMaps using HAZUS-MH, FEMA’s risk assessment methodology. ShakeMaps provide the ground-shaking intensity in an area to facilitate effective emergency response in the event of a catastrophic earthquake. The addition of HAZUS-MH loss estimates allows emergency managers to develop mitigation strategies prior to an event and to respond more appropriately to the areas of immediate need once the event occurs.

Fifteen earthquake scenarios (shown), ranging from magnitude 5.2 to 7.0, along the Wasatch fault and other Utah faults in the Intermountain Seismic Belt were developed and entered into HAZUS-MH to produce a suite of twelve maps illustrating potential losses. These loss maps consist of estimates of functionality and damage to lifelines and transportation corridors, location, and severity of areas of predicted liquefaction and strong ground shaking; economic loss forecasts; shelter needs; estimates of severe injuries; building inspection needs; locations of utilities; and other potentially vulnerable facilities.

This information is used by FEMA and the Utah State Office of Emergency Services and made publicly available for both pre- and postdisaster scenarios, as well as for event planning and exercises. First responders will be able to use the resulting loss estimation maps to guide them in emergency response in advance of any postearthquake analysis.

Courtesy of FEMA Mitigation Directorate.

Map Book Page [PDF]