| ASCE | American Society of Civil Engineers |
| CONUS | Continental United States |
| CPD | Computer Program Document |
| CPT | Cone Penetration Test |
| FEMA | Federal Emergency Management Agency |
| HEC | Hydrologic Engineering Center |
| IWR | Institute for Water Resources |
| NEHRP | National Earthquake Hazards Reduction Program |
| OCONUS | Outside the Continental United States |
| PI | Plasticity Index |
| QC | Quality Control |
| RMC | Risk Management Center |
| SEI | Structural Engineering Institute |
| SPT | Standard Penetration Test |
| UDF | User-Defined Function |
| U.S. | United States |
| USACE | United States Army Corps of Engineers |
| USGS | United States Geologic Survey |
