ODIVELAS DAM |
|
| PURPOSE - Irrigation | |
| LOCATION | GENERAL FEATURES |
| District -
Beja Municipality - Ferreira do Alentejo Site - Odivelas River Basin - Sado River - Odivelas river |
Promoting entity
- INAG Owner- Associação de Beneficiários da Obra de Odivelas Engineering by - DGSH Construction by - ZAGOPE Project year - 1967 Year of completion - 1972 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 430 km2 Mean annual rainfall - 640 mm Mean annual runoff - 80 800 x 1 000 m3 Flood runoff - 1100 m3/s Return period - 100 years |
Reservoir area -
9 730 x 1 000m2 Gross capacity - 96 000 x 1 000m3 Effective storage - 70 000 x 1 000m3 Dead storage - 26 000 x 1 000m3 Normal water level (NWL) - 103 m Maximum flood level (MFL) - 104,55 m Minimum operating level - 91,3 m |
| DAM | |
| Earthfill -
Homogeneous embankment Concrete - Multi-arch dam Composite dam - Yes Height above foundation - 55 m Height above streambed - 48 m Crest elevation - 106 m Crest length - 544 m Crest width - 7,5 m Foundation - Schist (doleritos) Volume of Earthfill - 86 x 1 000 m3 Volume of Concrete - 97 x 1 000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Center Control type - Controlled Spillway type - Over the dam Sill elevation - 97,5 m Sill length - 2 x 10 m Number of gates - 2 radial gates Maximum discharge - 650 m3/s Energy dissipation - Flip bucket |
Location -
Thalweg Type - Through the dam Section - d 2,0 m Maximum discharge - 50 m3/s Upstream control - Fixed roller gate Downstream control - Hollow jet valve Energy dissipation - Hollow jet and scour holes |