| Santa Luzia Dam | |
| Name Official: | Barragem de Santa Luzia |
| Location Map: | Portugal |
| Coordinates: | 40.0898°N -7.858°W |
| Dam Crosses: | Unhais |
| Location: | municipality Pampilhosa da Serra, Coimbra District, Portugal |
| Status: | O |
| Dam Type: | Concrete arch dam |
| Dam Volume: | 80000m2 |
| Construction Began: | 1930 |
| Opening: | 1942 |
| Res Name: | Santa Luzia Reservoir |
| Res Capacity Total: | 53700000m2 |
| Res Surface: | 2.46km2 |
| Plant Commission: | 1942 |
| Plant Turbines: | 4 x 8 MW Pelton-type |
| Plant Capacity: | 32 MW |
| Plant Annual Gen: | 55 GWh |
Santa Luzia Dam (Portuguese: Barragem de Santa Luzia|links=no) is a concrete arch dam on the Unhais, a northern tributary of the Zêzere River, located in the municipality Pampilhosa da Serra, in Coimbra District, Portugal. The dam was constructed between 1930 and 1942[1] and was designed by André Coyne.[2]
Santa Luzia Dam is a 76 m tall and 115 m long arch dam. The volume of the dam is 80.000 m³. The dam contains 2 crest spillways and one bottom outlet. At full reservoir level the reservoir of the dam (Portuguese: Albufeira da Barragem de Santa Luzia|links=no) has a surface area of 2.46 km² and its total capacity is 53.7 Mio m³.[1]
The concrete of the dam is affected by concrete swelling, caused by an alkali–silica reaction, that leads to tensions and cracks in the concrete.[3] [4]
The power plant is one of the smaller hydroelectric power stations in Portugal with a nameplate capacity of 32 MW. Its average annual generation is 55 Mio. kWh. The power station contains four Pelton turbine-generators.[1]