We have a school project in Southern California. The FEMA website has a map designation for that area, but it is listed as Zone D (Undetermined risk). Calls to the local county public works dept. confirms the FEMA map for that area as Zone D. Many of the surrounding communities in that area are Zone D, and are not in any real danger of flooding. But this does not meet the credit requirements. What other options have people used to document their project is minimum 5 feet above a FEMA defined flood plain?

Thanks!