Llyn Brenig
| Dam Name | Llyn Brenig |
| River | Afon Brenig |
| Near City | Denbigh |
| Administration City | England |
| Country | United Kingdom |
| Year | 1976 |
| Dam Height | 50 |
| Dam Length | 1200 |
| Area(Sqkm) | 3.8 |
| Area(Polygonal) | 3.8 |
| Capital Expenditure | 61.5 |
| Depth(M) | 16.2 |
| Avg Displacement Of Water | 561 |
| Catchment Area In Sqkm | 21 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -3.54125 |
| Latitude | 53.07875 |
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