CAIA DAM |
|
| PURPOSE - Irrigation / Water supply | |
| LOCATION | GENERAL FEATURES |
| District -
Portalegre Municipality - Elvas River Basin - Guadiana River - Caia river |
Promoting entity
- Associação de Beneficiários do Caia Owner (RSB) - Associação de Benef. do Caia Engineering by - DGSH Construction by - SOMEC Year of completion - 1967 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 571 km2 Flood runoff - 1080 m3/s |
Reservoir area -
19700 x 1000m2 Gross capacity - 203000 x 1000m3 Effective storage - 192300 x 1000m3 Dead storage - 10700 x 1000m3 Normal water level (NWL) - 233,5 m Maximum flood level (MFL) - 233,9 m |
| DAM | |
| Earthfill -
Embankment Concrete - Buttress Mixed dam - Yes Height above foundation - 52 m Height above streambed - 45,2 m Crest elevation - 235,2 m Crest length - 949 m Crest width - 11 m Foundation - Composite Rock/Earth: Schist and granite Volume of dam body - Earthfill - 171,7 x 1000 m3; Concrete - 181,7 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Center Control type - Controlled Spillway type - Over the dam Number of gates - 2 Maximum discharge - 430 m3/s Energy dissipation - Hydraulic jump |
Location - Thalweg Type - Through the dam Section - d 2 m Maximum discharge - 59 m3/s Upstream control - Sluice gate Downstream control - Hollow jet valve Energy dissipation - Hollow jet and scour holes |
| POWER PLANT | |
| Power installed
capacity - 0,6 MW Mean annual energy output - 1,5 GWh |
|