VALEIRA DAM |
|
PURPOSE - Hydroelectric / Navigation | |
LOCATION | GENERAL FEATURES |
District-
Viseu Municipality - S. João da Pesqueira Site - Valeira River Basin - Douro River - Douro river |
Promoting entity
- CPPE, Cª. Portuguesa de Produção de Electricidade, SA Owner - CPPE Engineering by - EDP Construction by- Moniz da Maia, Serra & Fortunato Project year- 1971 Year of completion - 1975 |
HYDROLOGY | RESERVOIR |
River basin area
- 85 400 km2 Mean annual rainfall - 582 mm Mean annual runoff - 4 755 600 x 1 000 m3 Flood runoff - 17 700 m3/s Return period - 1 000 years |
Reservoir area
- 7 950 x 1 000m2 Gross capacity - 97 000 x 1 000m3 Effective storage - 8 000 x 1 000m3 Normal water level (NWL) - 105 m |
DAM | |
Concrete - Gravity Height above foundation - 48 m Crest elevation - 113 m Crest length - 380 m Crest width - 6 m Foundation - Schist Volume of dam body - 220 x 1 000 m3 |
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SPILLWAY | |
Location - Dam
body Control type - Controlled Spillway type - Central surface Sill elevation - 90,1 m Sill length - 5 x 26 + 4,2 = 34,2 m Number of gates - 5 radial gates Maximum discharge - 18 000 m3/s Energy dissipation - Stilling basin |
|
POWER PLANT | |
Type - Adjacent
to the dam Number of installed units - 3 Type of units - Kaplan Power installed capacity - 216 MW Mean annual energy output - 801 GWh |