I am trying to find some detailed earthquake threat maps/fault line maps.... A long time ago someone told me that Highway 26 out in the Sandy area was built on a fault line, but looking at this map from Clackamas County it looks pretty blue (good) through the Boring/Sandy area. Then I start looking at where I work (thinking of getting home in case of a larger earthquake) and the map isn't detailed enough for me to locate the rough area where I work... I see some blue where I think I work... but then there is a wide patch of orange, so I kinda want to zoom in and look. I know these are rough estimates and can't guarantee a lack of structural damage, etc -- but I'd still rather be in a blue area than a orange area! So does anyone know of an online system for querying this type of map data?