| Acronym | Definition |
|---|
| HRWA➣Harpeth River Watershed Association (Tennessee) |
| HRWA➣Hudson River Watertrail Association |
| HRWA➣Herring Run Watershed Association (Baltimore, MD) |
| HRWA➣High Range Water Reducer (concrete) |
| HRWA➣Hudson River Watershed Alliance (Poughkeepsie, NY) |
| HRWA➣Human Rights Watch/Africa |
| HRWA➣Human Rights Watch Association |