New Online Tool Helps Residents Assess Earthquake Risk

SAN FRANCISCO, Oct. 16, 2018 /PRNewswire/ -- An online tool from the Association of Bay Area Governments is now available to help residents identify potential earthquake-related damage to their homes and provides information on how to gird against the next big temblor.

The Earthquake Home Quiz can be accessed at ABAG's Resilience Program's website at homequakequiz.org, along with a downloadable PDF of the Earthquake Field Guide to help assess potential impacts of earthquakes. The new Earthquake Field Guide is being released to coincide with the 10^th Annual Great California ShakeOut on Oct. 18, a statewide preparedness event. 

"The time to prepare is now," said David Rabbitt, ABAG president and member of the California Seismic Safety Commission. "We are in earthquake country and it's just a matter of time before we are affected in some way, whether small or large. The quiz is an engaging, new way to see what the effects might be and lays the groundwork for preparedness."  

The U.S. Geological Survey has determined there is a 72 percent of at least one earthquake of magnitude 6.7 or greater striking somewhere in the Bay Area in the next 30 years.  It's the continual movement of the Earth's plates against each other that causes energy to build. When the plates slip, energy is released and earthquakes result. In the Bay Area's case, it's the Pacific Plate moving northwest past the North American Plate that puts pressure along the faults in the region.

The quiz allows residents to gain insight into seismic safety, whether they are in a single-family home, apartment building or mobile home. The types of housing in the region are as diverse as the Bay Area itself and the quiz allows residents to explore the resilience of their particular type of home.

The release of these online tools come in the wake of updated ABAG estimates of housing losses in the region as a result of a large-scale earthquake.  The ABAG data tell a compelling and personal story about the Bay Area's potential future after an earthquake: How many buildings will be damaged? How many households will be displaced? And how many residents will be seeking shelter? Visit resilience.abag.ca.gov/housing/losses to review the findings and connect with the data behind the numbers.

ABAG's newest estimates of housing losses provide a significant update to the last such data released in 2003 with the latest figures reflecting current housing stock and the Bay Area's present population.

The figures use the most recent modeling techniques to identify potential residential housing losses for 16 plausible earthquake scenarios in the Bay Area. Under the most dramatic scenario, a 7.8 magnitude quake along all the northern segments of the San Andreas Fault, 68,900 residential buildings would be rendered uninhabitable, while causing $28.4 billion in residential building damage alone.

Under this scenario, San Mateo would have the largest number of uninhabitable residential buildings at 19,300; followed by San Francisco at 18,300; Santa Clara at 15,500; Alameda at 8,300; Marin at 3,100; Sonoma at 2,400; Contra Costa at 1,400; Solano at 400; and Napa at 200. In all 68,900 buildings would be uninhabitable.   

Founded in 1961, ABAG is the official regional planning agency for the 101 cities and towns, and nine counties of the Bay Area and is recognized as the first council of governments in California.

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SOURCE Association of Bay Area Governments