| Terrig | |
|---|---|
 The Terrig near Leeswood Old Hall. | |
| Etymology | From Welsh terydd, "swift", or terig, "violent, harsh" |
| Native name | Afon Terrig (Welsh) |
| Location | |
| Country | Wales |
| Counties | Denbighshire, Flintshire |
| Physical characteristics | |
| Source | |
| • location | Llyn Cyfynwy, near Graianrhyd, Denbighshire |
| • coordinates | 53°4′58.28″N 3°10′13.49″W / 53.0828556°N 3.1704139°W |
| • elevation | 370 m (1,210 ft) |
| Mouth | |
• location | confluence with River Alyn, Flintshire |
• coordinates | 53°8′56.929″N 3°6′1.595″W / 53.14914694°N 3.10044306°W |
• elevation | 95 m (312 ft) |
The River Terrig (Welsh: Afon Terrig) is a small river in north-east Wales.
The river rises at Llyn Cyfynwy near Graianrhyd village in the community of Llanarmon-yn-Ial, Denbighshire, about three miles from the source of the River Alyn.[1] It then flows northwards and eastwards, forming the boundary between the old parishes of Nercwys and Treuddyn. At Nant-y-Mynydd it is joined by several small springs from Mynydd Ddu, and finally itself joins the River Alyn at Pontblyddyn, Flintshire.[1]
The Terrig is a habitat for brown trout. Its name is derived from its rapid flow after times of heavy rain; Thomas Pennant, in his Tours in Wales, described it as "the Terrig, or the violent, [...] often of a tremendous swell and fury".[2]
