CNMS – NVUE Initiated Calculator

FEMA’s Coordinated Needs Management Strategy (CNMS) uses a geospatial database to identify and track flood hazard study lifecycle and mapping needs within the flood hazard mapping program. CNMS supports community officials and FEMA personnel in analyzing and depicting the validity of flood studies to enhance the understanding of flood hazard risk and make informed decisions on community planning and flood mitigation.

FEMA administers the National Flood Insurance Program (NFIP) and provides flood hazard data and maps nationwide. As floodplains are constantly changing, Flood Insurance Rate Maps (FIRMs) are updated to reflect physiological, climatological, and engineering methodology (PCE) changes.

The CNMS Viewer provides users a single interactive map view of riverine studies, coastal studies, unmapped stream reaches, and mapping request information. In addition, users can view the validity of a flood hazard study to understand if an area is New, Valid, and Updated Engineering (NVUE) compliant. NVUE compliance means the studies were completed using up-to-date engineering methodology and/or conducted in areas where significant PCE changes have not occurred since the date of the original study. Below is an image of data populated in the CNMS Viewer. Colored stream and coast lines display the validation status of flood hazard studies in the FEMA CNMS.