CRESTUMA - LEVER DAM |
|
PURPOSE - Hydroelectric / Water supply / Navigation | |
LOCATION | GENERAL FEATURES |
District -
Porto Municipality - Porto Site - Crestuma River Basin - Douro River - Douro river |
Promoting entity
- CPPE, Cª. Portuguesa de Produção de Electricidade, SA Owner (RSB) - CPPE Engineering by - EDP Construction by - Construtora do Tâmega, Ldª. Project year - 1976 Year of completion - 1985 |
HYDROLOGY | RESERVOIR |
River basin area
- 92040 km2 Mean annual rainfall - 1078 mm Mean annual runoff - 7388900 x 1000 m3 Flood runoff - 26000 m3/s Return period - 1000 years |
Reservoir area -
12980 x 1000m2 Gross capacity - 110000 x 1000m3 Effective storage - 22500 x 1000m3 Normal water level (NWL) - 13 m Maximum flood level (MFL) - 21,5 m |
DAM | |
Concrete - Gravity Height above foundation - 65 m Crest elevation - 25,5 m Crest length - 470 m Crest width - 8,2 m Foundation - Schist Volume of dam body - 205 x 1000 m3 |
|
SPILLWAY | |
Location - IDam
body Spillway type - Over the dam Sill length - 241,6 m Number of gates - 8 Maximum discharge - 26000 m3/s Energy dissipation - Stilling basin |
|
POWER PLANT | |
Type - Contiguous
to dam Number of installed units - 3 Type of units - Kaplan Power installed capacity - 108 MW Mean annual energy output - 366,9 GWh |