Editing Chino Hills, California (section)

=== Faults ===
Chino Hills is situated near several significant fault lines due to its position within the complex tectonic setting of the [[San Andreas Fault]] system. The most prominent faults in the area include:

# [[Chino Fault]]: This fault runs along the eastern edge of the Chino Hills, extending from Corona to the Los Serranos area. 
# [[Whittier Fault]]: Located to the west of Chino Hills, 
# [[Yorba Linda Fault]] (Yorba Linda Trend): This lesser-known fault identified in the 1990s transects the Whittier Fault and extends into the southeastern portion of Chino Hills.
# Additionally, there are other active faults in the broader region, including the [[Elsinore Fault Zone|Elsinore Fault]] [[Elsinore Fault Zone|Zone]], which runs from the Peninsular Ranges northwest to the Chino Hills range.

These faults contribute to the seismic activity in the region, such as the 2008 Chino Hills earthquake, with a magnitude of 5.4, attributed to pressure at the intersection of the Chino and Whittier faults. The earthquake was felt as far south as San Diego and as far north as Las Vegas.
{{Main|2008 Chino Hills earthquake}}