DIVOR DAM

PURPOSE - Irrigation
LOCATION GENERAL FEATURES
District - Évora
Municipality - Arraiolos
Site - Igrejinha
River Basin - Tejo
River - Divor river
Promoting entity - Associação de Beneficiários do Divor
Owner (RSB) - Associação de Beneficiários do Divor
Engineering by - DGSH
Construction by - José Bento Pedroso & Filho
Year of completion - 1965
HYDROLOGY RESERVOIR
River basin area - 43 km2
Mean annual runoff - 17069 x 1000 m3
Flood runoff - 310 m3/s
Reservoir area - 2390 x 1000m2
Gross capacity - 11900 x 1000m3
Effective storage - 11890 x 1000m3
Dead storage - 10 x 1000m3
Normal water level (NWL) - 261,4 m
Maximum flood level (MFL) - 262,2 m
DAM
Earthfill - Homogeneous embankment
Height above foundation - 23 m
Height above fstreambed - 21 m
Crest elevation - 263,6 m
Crest length - 636 m
Crest width - 7 m
Volume of dam body - 255 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Saddle at left embankment
Control type - Uncontrolled
Spillway type - Chute spillway
Sill elevation - 261,4 m
Sill length - 29 m
Maximum discharge - 45 m3/s
Energy dissipation - Hydraulic jump
Location - Right bank
Type - Conduit under the embankment
Section - d 800 mm
Maximum discharge - 4,2 m3/s


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