| ADCIRC | Advanced Circulation Model |
| AdH | Adaptive Hydraulics Model |
| CDL | Cropland Data Layer |
| CDMS | Comprehensive Data Management System |
| CES | Cooperative Extension System |
| CFCC | Census Feature Class Code |
| CPD | Computer Program Documentation |
| DHI | Danish Hydraulic Institute |
| ECAM | Economic Consequence Assessment Model |
| EGM | Economic Guidance Memorandum |
| EMA | Emergency Management Agency |
| EPZ | Emergency Planning Zone |
| ERDC | Engineer Research and Development Center |
| ESRI | Environmental Systems Research Institute, Inc. |
| FEMA | Federal Emergency Management Agency |
| FIPS | Federal Information Processing Standard |
| GB | Gigabyte |
| GDAL | Geospatial Data Abstraction Library |
| GIS | Geographic Information System |
| GUI | Graphical User Interface |
| HEC | Hydrologic Engineering Center |
| HEC-DSSVue | HEC Data Storage System Visual Utility Engine |
| HEC-FIA | HEC Flood Impact Analysis |
| HEC-RAS | HEC River Analysis System |
| LEHD | Longitudinal Employer-Household Dynamics |
| MB | Megabyte |
| NASS | National Agricultural Statistics Service |
| NIFA | National Institute of Food and Agriculture |
| NSI | National Structure Inventory |
| OMB | Office of Management and Budget |
| OpenGL | Open Graphics Library |
| OSM | OpenStreetMap |
| PAI | Protective Action Initiation |
| PAR | Population at Risk |
| RAM | Random Access Memory |
| RMC | Risk Management Center |
| USACE | U.S. Army Corps of Engineers |
| USDA | U.S. Department of Agriculture |
