CANIÇADA DAM

PURPOSE - Hydroelectric
LOCATION GENERAL FEATURES
District - Braga
Municipality - Terras do Bouro
Site - Caniçada
River Basin - Cávado
River - Cávado river
Promoting entity - CPPE, Cª Portuguesa de Produção de Electricidade, SA
Owner (RSB) - CPPE
Engineering by - Hidro-Eléctrica do Cávado
Construction by - SEOP
Year of completion - 1955
HYDROLOGY RESERVOIR
River basin area - 783 km2
Mean annual rainfall - 1900 mm
Reservoir area - 6890 x 1000m2
Gross capacity - 170600 x 1000m3
Effective storage - 159300 x 1000m3
Normal water level (NWL) - 162 m
DAM
Concrete - Arch dam
Height above foundation - 76 m
Crest elevation - 163 m
Crest length - 246 m
Foundation - Granite
Volume of dam body - 90 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Dam body
Control type - Controlled
Spillway type - Over the dam
Sill elevation - 157,5 m
Sill length - 4 x 9= 36 m
Number of gates - 4 Stoney
Maximum discharge - 1700 m3/s
Energy dissipation - Hydraulic jump
Location - Thalweg
Type - Through the dam
Section - d 2,6m
Maximum discharge - 142 m3/s
Downstream control - Hollow jet valve
Energy dissipation - Hollow jet

POWER PLANT
Type - Underground
Number of installed units - 2
Type of units - Francis
Power installed capacity - 60 MW
Mean annual energy output - 346 GWh


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