| ACS | American Community Survey |
| BFE | Base flood elevation |
| BW | Biggert-Waters Flood Insurance Reform Act |
| CDBG | Community development block grant |
| CRS | Community Rating System |
| DFIRM | Digital flood insurance rate map |
| DHS | Department of Homeland Security |
| FEMA | Federal Emergency Management Agency |
| FIMA | Federal Insurance and Mitigation Administration |
| FIRM | Flood insurance rate map |
| GAO | Government Accountability Office |
| GIS | Geographic Information System |
| HEC | Hydrologic Engineering Center |
| HEC-HMS | Hydrologic Engineering Center-Hydrologic Modelling System |
| HEC-RAS | Hydrologic Engineering Center-River Analysis System |
| HFIAA | Homeowner Flood Insurance Affordability Act |
| HUD | Department of Housing and Urban Development |
| LiDAR | Light detection and ranging |
| NAS | National Academy of Sciences |
| NCFMP | North Carolina Floodplain Mapping Program |
| NFHL | National Flood Hazard Layer |
| NFIP | National Flood Insurance Program |
| NRC | National Research Council |
| PFS | Pre-FIRM subsidized |
| PRP | Preferred risk policy |
| PUMS | Public use microdata sample |
| RDC | Research Data Center |
| Risk MAP | Risk Mapping Assessment and Planning |
| SBA | Small Business Administration |
| SFHA | Special Flood Hazard Area |
| USACE | U.S. Army Corps of Engineers |
| WYO | Write-Your-Own |