| ALTO RABAGÃO DAM | |
| PURPOSE - Hydroelectric | |
| LOCATION | GENERAL FEATURES |
| District -
Vila Real Municipality - Montalegre Site - Pisões River Basin - Cávado River - Rabagão river |
Promoting entity
- CPPE, Companhia Portuguesa de Produção de Electricidade, S.A Owner (RSB) - CPPE Engineering by - Hidroeléctrica do Cávado Construction by - MAGOP Project year - 1957 Year of completion - 1964 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 210 km2 Mean annual rainfall - 1500 mm Mean annual runoff - 180000 x 1000 m3 Flood runoff - 860 m3/s |
Reservoir area -
22120 x 1000m2 Gross capacity - 568690 x 1000m3 Effective storage - 557920 x 1000m3 Dead storage - 10770 x 1000m3 Normal water level (NWL) - 880 m Maximum flood level (MFL) - 880,1 m Minimum operating level (MOL) - 829 m |
| DAM | |
| Concrete - Arch
Gravity dam Composite dam - Yes Height above foundation - 94 m Crest elevation - 880 m Crest length - 1970 m Foundation - Granite, schiste Volume of dam body - 1117 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Dam
body Control type - Controlled Spillway type - Over the dam Sill elevation - 860 m Number of gates - 2 fixed roller gates Maximum discharge - 500 m3/s |
Location - Thalweg Type - Through the dam Maximum discharge - 360 m3/s Downstream control - Hollow jet valve Energy dissipation - Hollow jet |
| POWER PLANT | |
| Type - Powerhouse
at the toe of the dam Number of installed units - 2 Type of units - Turbine/Pump - Francis Power installed capacity - 68 MW Mean annual energy output - 97 GWh |
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