ODEÁXERE (BRAVURA) DAM

PURPOSE  - Irrigation / Hydroelectric
LOCATION GENERAL FEATURES
District - Faro
Municipality - Lagos
Site - Bravura
River Basin - Ribeiras do Algarve
River - Odeáxere river
Promoting entity - Associação de Reg. e Benef.os do Alvor
Owner - A. R. e Beneficiários do Alvor
Engineering by - Hidrotécnica Portuguesa
Construction by - Moniz da Maia & Vaz Guedes
Project year - 1955
Year of completion - 1958
HYDROLOGY RESERVOIR
River basin area - 76,8 km2
Mean annual rainfall - 685,8 mm
Mean annual runoff -
Flood runoff - 300 m3/s
Return period  -
100 years
Reservoir area - 2850 x 1000m2
Gross capacity - 34825 x 1000m3
Effective storage - 32260 x 1000m3
Dead storage - 2565 x 1000m3
Normal water level (NWL) - 84,1 m
Maximum flood level (MFL) - 85 m
DAM
Concrete -   <<arch dam
Height above foundation - 41 m
Height above streambed- 36 m
Crest elevation - 86 m
Crest length - 150 m
Crest width - 5 m
SPILLWAY BOTTOM OUTLET
Location - Center
Control type - Uncontrolled
Spillway type - Over the dam
Maximum discharge - 21 m3/s
Location - Thalweg
Type - Through the dam
Section - d 800 mm
Maximum discharge - 8 m3/s
Upstream control  - Sluice gate
Downstream control  - Hollow jet valve
Energy dissipation - Hollow jet and scour holes
POWER PLANT
Type - Far away from the dam
Mean annual energy output - 1 GWh


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