CABRIL DAM |
|
| PURPOSE - Hydroelectric | |
| LOCATION | GENERAL FEATURES |
| District -
Castelo Branco Municipality - Sertã Site - Cabril River Basin - Tejo River - Zêzere river |
Promoting entity
- CPPE, Cª. Portuguesa de Produção de Electricidade, SA Owner (RSB) - CPPE Engineering by - Hidroeléctrica do Zêzere Construction by - Moniz da Maia & Vaz Guedes Project year - 1950 Year of completion - 1954 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 2340 km2 Mean annual rainfall - 1300 mm Mean annual runoff - 1577000 x 1000 m3 Flood runoff - 4000 m3/s Return period - 1000 years |
Reservoir area -
20230 x 1000m2 Gross capacity - 720000 x 1000m3 Effective storage - 615000 x 1000m3 Normal water level (NWL) - 294 m Maximum flood level (MFL) - 296,3 m |
| DAM | |
| Concrete - Double
curvature arch dam Height above foundation - 132 m Crest elevation - 297 m Crest length - 290 m Foundation - Granite Volume of dam body - 360 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - On
both banks Control type - Controlled Spillway type - Shaft spillway Sill elevation - 278 m Number of gates - 2 stoney Maximum discharge - 2200 m3/s Energy dissipation - Hollow jet and scour hole |
Location - Thalweg Type - Through the dam Section - 3 m Maximum discharge - 200 m3/s Downstream control - Howell-Bunger valve Energy dissipation - Hollow jet and scour hole |
| POWER PLANT | |
| Type - Dam
toe Number of installed units - 2 Type of units - Vertical axis Power installed capacity - 97 MW Mean annual energy output - 301 GWh |
|