SALAMONDE DAM

PURPOSE - Hydroelectric
LOCATION GENERAL FEATURES
District - Braga
Municipality - Vieira do Minho
Site- Salamonde
River Basin - Cávado
River - Cávado river
Promoting entity - CPPE, Cª. Portuguesa de Produção de Electricidade, SA
Owner - CPPE
Engineering by - A. COYNE, J. BELLIER
Construction by - SEOP
Year of completion - 1953
HYDROLOGY RESERVOIR
River basin area - 642 km2
Reservoir area   - 2 420 x 1 000 m2
Gross capacity - 65 000 x 1 000 m3
Effective storage - 56 300  x 1 000 m3
Normal water level (NWL) - 280 m
Maximum flood level (MFL) - 280,5 m
DAM
Concrete - Thin arch dam
Height above foundation - 75 m
Crest elevation - 281 m
Crest length - 284 m
Foundation - Granite
Volume of dam body
- 93 x 1 000 m3
SPILLWAY BOTTOM OUTLET
Location - Dam body
Control type - Controlled
Spillway type - Over the dam
Sill elevation - 275,8 m
Sill length -
40 m
Number of gates - 4 Stoney gates
Maximum discharge -
1 700 m3/s
Energy dissipation - Stilling basin
Location - Thalweg
Type - through the dam
Section - D 2,6 m
Maximum discharge - 130 m3/s
Downstream control - Hollow jet valve
Energy dissipation - Hollow jet and scour holes
POWER PLANT
Type - Underground
Number of installed units - 2
Type of units - Francis
Power installed capacity - 42 MW
Mean annual energy output - 232 GWh


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