NUNES DAM |
|
PURPOSE - Hydroelectric | |
LOCATION | GENERAL FEATURES |
District -
Bragança Municipality - Vinhais Site - Vila Verde River Basin - Douro River - Tuela river |
Promoting entity
- Sociedade Produtora de Energia Mini-Hídrica, Lda Owner - Soc. P. de Energia Mini-Hídrica Year of completion - 1995 |
HYDROLOGY | RESERVOIR |
River basin area
- 406 km2 Mean annual rainfall - 1291,1 mm Flood runoff - 1350 m3/s Return period - 1000 years |
Gross capacity -
138 x 1000m3 Effective storage - 98 x 1000m3 Normal water level (NWL) - 535,5 m Maximum flood level (MFL) - 541,3 m Minimum operating level - 532 m |
DAM | |
Concrete -
Cuvature gravity dam Height above foundation - 21,5 m Height above streambed - 18,5 m Crest elevation - 542,3 m Crest length - 65,5 m |
|
SPILLWAY | BOTTOM OUTLET |
Location - Dam
body Control type - Uncontrolled Spillway type - Over the dam Sill elevation - 535,5 m Sill length - 45 m Maximum discharge - 1350 m3/s Energy dissipation - Inexistent |
Location -
Right bank Type - Through the dam Section - 6 m2 Maximum discharge - 52,36 m3/s Upstream control - Sluice gate Downstream control - Sluice gate Energy dissipation - Inexistent |
POWER PLANT | |
Type - Circuito
hidráulico Number of installed units - 2 Type of units - Francis turbines Power installed capacity - 9,9 MW Mean annual energy output - 41,56 GWh |