FEMA Map Amendment & Revision Processes Flashcards
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Read the first 7 FEMA Map Amendment & Revision Processes flashcards as text
What fundamentally distinguishes a Letter of Map Revision (LOMR) from a Letter of Map Amendment (LOMA)?
Answer: A LOMR reflects physical changes to flooding conditions in the floodplain, while a LOMA corrects inadvertent mapping errors
A LOMR revises the FIRM based on physical changes to the floodplain (new levees, channelization, fill, etc.), while a LOMA simply corrects a mapping error for a property whose natural ground was always above the BFE.
Which FEMA application form is required to submit a LOMR request?
Answer: MT-2
MT-2 is the standard FEMA application form for Letters of Map Revision (LOMR) and Conditional Letters of Map Revision (CLOMR), covering community-wide map changes.
FEMA's target processing time for a standard LOMR application is approximately:
Answer: 60 calendar days
FEMA targets approximately 60 calendar days to process a standard LOMR, though complex revisions involving detailed hydraulic analysis may take longer.
When a LOMR revises floodway boundaries, which technical data submission is mandatory?
Answer: Hydraulic model output documenting new floodway limits and BFE changes, certified by a registered PE
Floodway revisions require certified hydraulic modeling input and output files demonstrating the revised floodway does not cause an increase in BFEs beyond allowed surcharge limits.
For a LOMR-F, which specific condition must be certified by a licensed engineer or licensed land surveyor?
Answer: The lowest adjacent grade of the structure is at or above the Base Flood Elevation after fill placement
The central certification for a LOMR-F is that the lowest adjacent grade (LAG) is now at or above the BFE, confirming the fill has elevated the site sufficiently to justify removal from the SFHA.
A required component of every LOMR application is:
Answer: A community acknowledgment letter signed by the local floodplain administrator
FEMA requires a community acknowledgment letter to confirm that the local floodplain administrator has reviewed the proposed revision and that the community agrees to enforce regulations for the revised area.
In a LOMR application that revises Base Flood Elevations, the hydraulic analysis package must include:
Answer: Certified input and output files from the hydraulic model and a technical report sealed by a registered PE
FEMA requires fully certified hydraulic model files and a stamped technical report so reviewers can independently verify the BFE calculations before revising the FIRM.