| Abbreviation | Definition |
|---|---|
| SWM | Shallow Water Model |
| SWM | Sustainable Watershed Management |
| SWMM | StormWater Management Model |
| SWQ | Surface Water Quality |
| SWQD | Surface Water Quality Division |
| SWQP | Surface Water Quality Program |
| SWQS | Surface Water Quality Standards |
| SWRO | SeaWater Reverse Osmosis |
| SXI | Solar X-ray Imager |
| SZM | Sigma/ Z-coordinate Model |
| T&A | Time And Attendance |
| TA | Technical Applications |
| TAADS | Transboundary Aquatic Animal Diseases |
| TAC | Total Allowable Catch |
| TAG | Trans Atlantic Geotraverse |
| TAGS | The Atlantic Groundfish Strategy |
| TALFF | Total Allowance Level Of Foreign Fishing |
| TALK | Total ALKalinity |
| TAO | Tropical Atmosphere Ocean |
| TAP | Trans-Alaskan Pipeline |