ALTO CEIRA DAM

PURPOSE - Hydroelectric / Diversion
LOCATION GENERAL FEATURES
District - Coimbra
Municipality - Pampilhosa da Serra
Site - Safra
River Basin - Mondego
River - Ceira river
Promoting entity - HIDROCENEL, Energia do Centro, SA
Owner (RSB) - HIDROCENEL
Engineering by - Sir William Halcrow & Partners
Construction by - Companhia Eléctrica das Beiras
Project year - 1940
Year of completion - 1949
HYDROLOGY  RESERVOIR
River basin area - 48 km2
Flood runoff - 100 m3/s
Reservoir area - 108 x 1000m2
Gross capacity - 1200 x 1000m3
Effective storage - 400 x 1000m3
Normal water level (NWL) - 665,4 m
DAM
Concrete - Arch dam
Height above foundation - 33,5 m
Crest elevation - 666,9 m
Crest length - 85 m
Foundation - Schist
Volume of dam body - 7 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Right bank
Control type - Uncontrolled
Spillway type - Over the dam
Sill elevation - 665,4 m
Sill length - 30 m
Maximum discharge - 100 m3/s
Energy dissipation - Plunge pool
Location - Thalweg
Type - Through the dam
Downstream control - Hollow jet valve
Energy dissipation - Hollow jet and scour hole


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