POCINHO DAM

PURPOSE - Hydroelectric / Navigation
LOCATION GENERAL FEATURES
District - Guarda
Municipality - Vila Nova Foz Coa
Site - Pocinho
River Basin - Douro
River - Douro river
Promoting entity - CPPE, Cª. Portuguesa de Produção de Electricidade, SA
Owner - CPPE
Engineering by - EDP
Construction by - SOMAGUE
Project year - 1974
Year of completion - 1982
HYDROLOGY RESERVOIR
River basin area - 81 005 km2
Mean annual rainfall - 582 mm
Mean annual runoff - 4 679 900 x 1 000 m3
Flood runoff  - 15 100 m3/s
Return period  -
1 000 years
Reservoir area   - 8 290 x 1 000m2
Gross capacity - 83 070 x 1 000m3
Effective storage - 12 240 x 1 000m3
Normal water level (NWL) - 125,5 m
Maximum flood level (MFL) - 134,5 m
DAM
Concrete - Gravity
Height above foundation - 49 m
Crest elevation - 139 m
Crest length - 430 m
Crest width - 6,4 m
Foundation -
Rocha
Volume of dam body
- 120 x 10 00 m3
SPILLWAY
Location - Dam body
Control type - Controlled
Spillway type - Over the dam
Sill elevation - 112,2 m
Sill length -
4 x 26 + 4,5 = 108,5 m
Number of gates - 4 radial gates
Maximum discharge -
15 000 m3/s
Energy dissipation - Stilling basin
POWER PLANT
Type - Underground, run-of-water
Number of installed units - 3
Type of units - Kaplan
Power installed capacity - 186 MW
Mean annual energy output - 534 GWh


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