| ALQUEVA DAM | |
| PURPOSE -
Storage / Irrigation / Water supply / Hydroelectric |
|
| LOCATION | GENERAL FEATURES |
| District -
Beja Municipality - Moura Site - Alqueva River Basin - Guadiana River - Guadiana river |
Promoting entity
- Empresa de Desenvolvimento e Infra-estruturas do Alqueva SA (EDIA) Owner (RSB) - EDP - Direcção Operacional de Equipamento Hidráulico Construction by - Ace - Somague - Bento Pedroso - Cubiertas - Dragados Project year - 1994 Year of completion - 2002 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 55000 km2 Mean annual runoff - 2851000 x 1000 m3 Flood runoff - 12000 m3/s Return period - 1000 years |
Reservoir area -
250000 x 1000m2 Gross capacity - 4150000 x 1000m3 Effective storage- 3150000 x 1000m3 Normal water level (NWL) - 152 m Maximum flood level (MFL) - 154,7 m Minimum operating level - 135 m |
| DAM Concrete - Double curvature arch dam Height above foundation - 96 m Crest elevation - 154 m Crest length - 458 m Crest width - 7 m Foundation - Rock Volume of dam body - 687 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - 2
in dam body and abutments Control type - Controlled Spillway type - WES crest and chute channel Sill elevation - 139 m Sill length - 2 x 19 = 38 m Maximum discharge - 6300 m3/s Energy dissipation - Flip bucket |
Location - Inside
diversion tunnel Section - d 3m Maximum discharge - 160 m3/s Upstream control - Downstream control - Energy dissipation - Flip bucket |
| POWER PLANT | |
| Type - Power
house at dam toe Number of installed units - 2 Type of units - Reversible Turbo/Francis Power installed capacity - 240 MW Mean annual energy output - 269 GWh |
|