TOUVEDO DAM

PURPOSE  - Hydroelectric / Irrigation / Flood control
LOCATION GENERAL FEATURES
District  - Viana do Castelo
Municipality - Ponte da Barca
Site - Touvedo
River Basin - Lima
River - Lima river
Promoting entity - CPPE, Cª. Portuguesa de Produção de Electricidade, SA
Owner - CPPE
Engineering by - EDP
Construction by - SOARES DA COSTA, SARL
Project year - 1987
Year of completion - 1993
HYDROLOGY RESERVOIR
River basin area - 1 700 km2
Mean annual runoff - 1 692 000 x 1 000 m3
Flood runoff  - 3 200 m3/s
Return period  - 
1 000 years
Reservoir area - 1 720 x 1 000 m2
Gross capacity - 15 500 x 1 000 m3
Effective storage - 4 500 x 1 000 m3
Normal water level (NWL) - 50 m
Minimum operating level  - 47,5 m
DAM
Concrete - Gravity, lightened
Height above foundation - 42,5 m
Crest elevation - 55 m
Crest length - 133,5 m
Foundation - Granite
Volume of dam body
- 74,62 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Body dam
Control type - Controlled
Spillway type - Over the dam
Sill elevation - 37 m
Sill length -
30,30 m
Number of gates - 3 cradial gates
Maximum discharge -
3200 m3/s
Energy dissipation - Stilling basin
Location - Thalweg
Type - Through the dam
Maximum discharge - 50 m3/s
Downstream control  - Yes
Energy dissipation - Hydraulic jump
POWER PLANT
Type - Contiguous to the dam
Number of installed units - 1
Type of units - Kaplan
Power installed capacity - 22 MW
Mean annual energy output - 67 GWh


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