USGS: Earthquake Probability Mapping A great tool. Just plug in your zip code or Lat/Lon and the size of the quake and time frame and a custom map will be created showing the probability of an earthquake occurring.
United States Geological Survey Great site to research maps and even determine if you're in an area that might be at risk of earthquakes.
Free Insurance Advice Great site for unbiased insurance advise and company information from consumers.
Flood Zone Map Tool Find out if your house or business is in a flood zone. FEMA's handy tool allows you to type in your address and view the latest flood maps to see what risk your home might be in.