Orange county is the next county for FEMA to redo the 100 year flood plain zone for commerical and residential properties. As a result of FEMA new updated mapping technology 2,500 properties in Seminole county will be in a flood-prone zone, and the revision has removed the equal number out of a flood zone. FEMA moving along county by county and after this has been completed, digital mapping will be access by everyone. Courtesy by Orlando Sentinel 2/19/06.