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Hi Julie, The process of requesting a LOMA requires either an Elevation Form (“Form 2”), or an NFIP Elevation Certificate be submitted. These forms need to be certified by a licensed land surveyor or a registered professional engineer. The only type of LOMA that doesn’t require this elevation measurement is the “out as shown” variety. These are the type where you can clearly see the structure isn’t in contact with the special flood hazard area (SFHA). The use of a GPS does not suffice for proving the elevation of a structure for the NFIP purposes. It can however be useful in determining whether the lowest elevation of the lowest level of the building is at or above the Base Flood Elevation (BFE). If it’s indeed above, then it might be worth the money and effort to hire a surveyor and go through the rest of the LOMA process. It can backfire though too. If the owner proves their structure is even lower than what it is shown, then it can ultimately mean higher NFIP premiums. Good to know the risks. I will follow up with you via telephone shortly. Best regards, J. Eric Eidswick FEMA Region I From: Northeast Arc Users Group [mailto:[log in to unmask]] On Behalf Of Julie Freshman Sent: Thursday, May 14, 2015 10:52 AM To: [log in to unmask] Subject: GPS-derived elevation information? Hi All – Wondering if anyone knows if GPS technology can be used to obtain survey-level accuracy for elevations. This is related to submitting a Letter of Map Amendment (LOMA) Request to FEMA which requires elevation information certified by a Licensed Land Surveyor or Registered Professional Engineer. Thanks, Julie V. Freshman, GISP Senior Environmental Scientist and Operations Manager [JLV version - for email sig] 474 Broadway Pawtucket, Rhode Island 02860 14 Lilac Street Sharon, Massachusetts 02067 (401) 728-6860 ext. 223 (401) 439-9091 Cell www.resourcecontrols.com<http://www.resourcecontrols.com/> ------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users. If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://listserv.uconn.edu/nearc-l.html. ------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users. If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://listserv.uconn.edu/nearc-l.html.