BY USING THIS WEBSITE OR THE CONTENT THEREIN, YOU AGREE TO THETERMS OF USE. This polygon feature class represents the flood hazard areas present in the Digital Flood Insurance Rate Map (DFIRM) database. The maps are effective as of September 29, 2006 . The scale of the data collection is 1:12,000. New data was sent to Oakland County in December, 2006 to reflect a LOMR done in the Troy area.