A couple of crisis response maps for the February 22, magnitude 6.3 Earthquake in Christchurch, New Zealand.
From Google a map of the destruction, with USGS earthquake shakemap, content from my maps and indicated sites affected. The page also includes links to view the same content in Google Earth.
Also see their links to other resources on their Crisis Response Page, providing quick access to relevant information. Including a person finder if you’re concerned about friends or relatives. or want to let people know you’re ok.
This site also includes information about how to send in your own reports.
both via Googlemapsmania