VALE DO COBRÃO DAM |
|
| PURPOSE - Irrigation | |
| LOCATION | GENERAL FEATURES |
| District -
Santarém Municipality - Benavente Site - Infantado River Basin - Tejo River - Vale Cobrão river |
Promoting entity
- Companhia das Lezírias Owner - Companhia das Lezírias Engineering by - Tecniagra Year of completion - 1982 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 98,7 km2 Mean annual rainfal - 648,1 mm Mean annual runoff - 6 480 x 1 000 m3 Flood runoff - 305,8 m3/s |
Reservoir area - 1
100 x 1 000 m2 Gross capacity - 6 200 x 1 000 m3 Normal water level (NWL) - 21,85 m |
| DAM | |
| Earthfill -
Zoned embankment Height above foundation - 20 m Height above streambed - 14 m Crest elevation - 23 m Crest length - 510 m Crest width - 5 m Foundation - sandy and clayey soil Volume of dam body - 500 x 1 000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Right
bank Control type - Uncontrolled Spillway type - Chute spillway Sill elevation - 22,55 m Sill length - 50 m Maximum discharge - 315,71 m3/s Energy dissipation - Hydraulic jump |
Location -
Thalweg Type - Conduit under the embankment Section - d 1,5 m Upstream control - Sluice gate Energy dissipation - Hydraulic jump |