| name | image | status | type | Area (m²) | date Commissioned | date Opened | date Start construction | Website | Height (m) | Country | continent | Maximum discharge (m³/day) | lake | Installed capacity (w) | latitude (°) | Length (m) | longitude (°) | Turbines | volume (m³) | administrative división | city | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cardiff Bay Barrage |  | Operational | Unspecified | 2001 | 1994 | website | United Kingdom | Europe | 51.4333343506 | 1,100 | -3.1500000954 | Wales | Penarth | Map |