RÉGUA DAM

PURPOSE - Hydroelectric / Navigation
LOCATION GENERAL FEATURES
District - Vila Real
Municipality - Peso da Régua
Site - Bagauste
River Basin - Douro
River - Douro river
Promoting entity - CPPE, Cª. Portuguesa de Produção de Electricidade, SA
Owner - CPPE
Engineering by - Hidro Eléctrica do Douro
Construction by - ETELI
Project year -
1965
Year of completion - 1973
HYDROLOGY RESERVOIR
River basin area - 90 800 km2
Mean annual rainfall - 582 mm
Mean annual runoff - 5 203 400 x 1 000 m3
Flood runoff -  21 500 m3/s
Return period - 
1 000 years
Reservoir area   - 8 500 x 1 000m2
Gross capacity - 95 000 x 1 000m3
Normal water level (NWL) - 73,5 m
DAM
Concrete - Gravity
Height above foundation -  41 m
Crest elevation - 81 m
Crest length - 350 m
Crest width - 6 m
Foundation -
Rock
Volume of dam body
- 108 x 1 000 m3
SPILLWAY BOTTOM OUTLET
Location - Dam body
Control type - Controlled
Spillway type- Over the dam
Sill elevation - 58,3 m
Sill length -
130 m
Number of gates - 5 radial gates
Maximum discharge -
21 500 m3/s
Energy dissipation - Hydraulic jump
Location - Thalweg
Type - Through the dam
Section - 29,22m2
Upstream control  - Yes
Downstream control  - No
POWER PLANT
Type - Contiguous to the dam
Number of installed units - 3
Type of units - Kaplan
Power installed capacity- 156 MW
Mean annual energy output - 738 GWh


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