VILAR DAM |
|
PURPOSE - Hydroelectric / Diversion | |
LOCATION | GENERAL FEATURES |
District -
Viseu Municipality - Tabuaço Site - Vilar River Basin - Douro River - Távora river |
Promoting entity
- CPPE, Cª. Portuguesa de Produção de Electricidade, SA Owner (RSB) - CPPE Engineering by - Hidro Eléctrica do Douro Construction by - Luso - Dana, Ldª. Project year - 1958 Year of completion - 1965 |
HYDROLOGY | RESERVOIR |
River basin area
- 360 km2 Mean annual rainfall - 929,6 mm Mean annual runoff - 305 800 x 1 000 m3 Flood runoff - 500 m3/s Return period - 1 000 years |
Reservoir area - 6
700 x 1 000 m2 Gross capacity - 99 750 x 1 000 m3 Effective storage - 95 270 x 1 000 m3 Normal water level (NWL) - 552 m |
DAM | |
Rockfill -
With upstream facing Height above foundation - 58 m Height above streambed - 55 m Crest elevation - 555 m Crest length - 240 m Crest width - 5,2 m Foundation - Schist and granite Volume of dam body - 300 x 1 000 m3 |
|
SPILLWAY | BOTTOM OUTLET |
Location - Right
bank Control type - Controlled Spillway type- Chute spillway Sill length - 12,40 m Number of gates - 2 radial gates Maximum discharge - 500 m3/s |
Location -
Thalweg Type - Rock tunnel Section - 2,14m2 Maximum discharge - m3/s Upstream control - N0 Downstream control - Hollow jet valve Energy dissipation - Hollow jet and scour holes |
POWER PLANT | |
Type - Underground Number of installed units - 2 Type of units - Pelton Power installed capacity - 64 MW Mean annual energy output - 148 GWh |