CMA Engineering, Inc.


Floodplain Evaluations

An integral part in planning any new development is to insure that all proposed structures are located out of floodplains. CMA works with clients and architects to maximize the development aesthetics and functionality, without any proposed structures encroaching into floodplains and buffer zones.

Master Drainage Study

For most developments, a master drainage study is developed at the beginning of the project. Pre-development and post-development stormwater runoff peak flow rates are modeled in order to determine the limits of the floodplain. CMA then works with the client and land planners or architects to determine the best possible location for the proposed development structures.  A drainage report, containing a full analysis, recommendations, and graphical representation of the floodplain, is created and submitted to local review authorities as part of the development approval process. The master drainage study is a tremendous tool for our clients. 

FEMA Map Change Requests

The Federal Emergency Management Agency (FEMA) developed the National Flood Insurance Program (NFIP) as a way for property owners to obtain insurance for structures at risk of being damaged due to flooding. Flood Insurance Rate Maps (FIRMs) are FEMA’s official designation of special hazard areas and risk premium zones applicable to specific areas. These maps are used to determine if flood insurance will be required for a property.  It is possible for the FIRMs to be inaccurate and a revision to a FIRM panel warranted.  In this case, it is possible to perform a study and submit a map change request to FEMA, in the form of a Letter of Map Revision (LOMR), Conditional Letter of Map Revision (CLOMR), Letter of Map Amendment (LOMA), Letter of Map Revision Based on Fill (LOMR-F).  CMA is experienced in submitting to FEMA and has obtained multiple map revisions to existing FIRM panels.