Since June of 2011, Council Bluffs, Iowa and the surrounding area has experienced record flooding along the Missouri River. Google has a data center in Council Bluffs, along with many employees that live in the city and surrounding region.
Google recently with its satellite provider, GeoEye, worked to acquire updated imagery of some of the affected area. This imagery is "now available as a KML file and will be live in the Historical Imagery section of Google Earth in the coming days," Chris Russell, Operations Manager, Council Bluffs data center.
Here're a couple of picutes of the affected area:
Eppley Airfield and region to the north (before and after)
Area between Council Bluffs/Omaha and Blair, Nebraska (before and after)
"We hope that it will be of use to emergency responders and the general public."
You can access all the new imagery by downloading the KML file and opening in Google Earth.