VIGIA DAM |
|
| PURPOSE - Water supply | |
| LOCATION | GENERAL FEATURES |
| District -
Évora Municipality - Redondo River Basin - Guadiana River - Vale de Vasco river |
Promoting entity
- Associação de Benefic. da Obra da Vigia Owner (RSB) - Assoc. Benef. da Obra da Vigia Construction by - ENGIL Year of completion - 1981 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 125 km2 Mean annual rainfall - 656 mm Flood runoff - 500 m3/s |
Reservoir area - 2
620 x 1 000 m2 Gross capacity - 16 725 x 1 000 m3 Effective storage - 15 580 x 1 000 m3 Normal water level (NWL) - 224 m Maximum flood level (MFL) - 224,75 m |
| DAM | |
| Earthfill -
Zoned embankment Height above foundation - 30 m Crest elevation - 226,25 m Crest length - 300 m Crest width - 10 m Foundation - Greywacke Volume of dam body - 284 x 1 000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Right
bank Control type - Controlled Spillway type - Chute spillway Sill elevation - 221,5 m Sill length - 2 x 11 m Number of gates - 2 sector gates Maximum discharge - 250 m3/s Energy dissipation - Hydraulic jump |
Location -
Right bank Type - Conduit under the embankment Section - d 2,5 m Maximum discharge - 31 m3/s Upstream control - Sluice gate Downstream control - Howell Bunger valve Energy dissipation - |