CERRO DO LOBO DAM

PURPOSE - Tailings dam
LOCATION GENERAL FEATURES
District - Beja
Municipality - Castro Verde
Site - Minas de Neves Corvo
River Basin - Guadiana
River - Barranco das Lages
Promoting entity - Somincor - Sociedade Mineira de Neves Corvo, S.A
Owner (RSB) - Somincor
Engineering by - Hidroprojecto
Construction by - Moniz da Maia, Serra e Fortunato
Project year - 1993
Year of completion - 1993
HYDROLOGY RESERVOIR
River basin area - 4,1 km2
Mean annual rainfall - 426,5 mm
Flood runoff - 15,85 m3/s
Return period - 10000 years
Reservoir area - 1500 x 1000m2
Gross capacity - 15500 x 1000m3
Normal water level (NWL) - 250,5 m
Maximum flood level (MFL) - 250,84 m
DAM
Earthfill - Zoned embankment
Other - Tailings dam
Height above foundation - 36,5 m
Height above foundation - 36 m
Crest elevation - 252 m
Crest length - 1010 m
Crest width - 8 m
Foundation - Greywacke and schist
Volume of dam body - 873 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Saddle at left embankment
Control type - Uncontrolled
Spillway type - Chute spillway
Sill elevation - 250,5 m
Sill length - 25 m
Maximum discharge - 8,42 m3/s
Energy dissipation - Steps
Location - Right bank
Type - Siphon
Section - d 400 mm
Maximum discharge - 0,69 m3/s
Downstream control - Rotary valve DN 350
Energy dissipation - Inexistent


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