Within 24 hours of Hurricane Isaac departing the Gulf Coast region, the National Geodetic Survey (NGS) immediately began emergency response aerial surveys with two NOAA aircraft to ensure vital waterways, ports, and coastal infrastructure were safe for maritime commerce. Response flights commenced on Aug. 31, and continued daily until Sept. 3. Images from the surveys were made available on NGS's storms website within six hours of the completion of the first mission and were continuously processed and uploaded as they were collected through the weekend. The 22 flights taken over 60 flight hours to identify areas significantly impacted by the hurricane resulted in over 1,776 square miles surveyed and 3,895 images collected and analyzed. For more information, contact Mike Aslaksen.