CAMBA DAM

PURPOSE - Water supply / Irrigation
LOCATION GENERAL FEATURES
District - Bragança
Municipality - Alfândega da Fé
Site - Gebelim and Peredo
River Basin - Douro
River - Camba river
Promoting entity - CM Alfândega da Fé
Owner (RSB) - C M Alfândega da Fé e DR Agricultura de Trás-os-Montes
Engineering by - Tecniagra
Construction by - Teixeira Duarte S.A
Project year - 1985
Year of completion - 1993
HYDROLOGY RESERVOIR
River basin area - 6 km2
Mean annual rainfall - 925 mm
Mean annual runoff - 1720 x 1000 m3
Flood runoff - 95 m3/s
Return period - 500 years
Reservoir area - 95 x 1000m2
Gross capacity - 1110 x 1000m3
Effective storage - 1080 x 1000m3
Dead storage - 30 x 1000m3
Normal water level (NWL) - 620,43 m
Maximum flood level (MFL) - 622 m
Minimum operating level - 598 m
DAM
Earthfill - Zoned embankment
Height above foundation - 35 m
Height above streambed - 30 m
Crest elevation - 623 m
Crest length - 175 m
Crest width - 8 m
Foundation - Schist
Volume of dam body - 200 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Right bank
Control type - Uncontrolled
Spillway type - Chute spillway
Sill elevation - 620,43 m
Sill length - 20 m
Maximum discharge - 40 m3/s
Energy dissipation - Hydraulic jump
Location - Left bank
Type - Conduit under the embankment
Section - d 900 mm
Maximum discharge - 5,2 m3/s
Upstream control - Fixed roller gate
Downstream control - Fixed roller gate
Energy dissipation - Hydraulic jump


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