| ALFAIATES DAM | |
| PURPOSE - Irrigation | |
| LOCATION | GENERAL FEATURES |
| District -
Guarda Municipality - Sabugal Site - Vila de Alfaiates River Basin - Douro |
Promoting entity
- Direcção Regional de Agricultura da Beira Interior Owner (RSB) - Hidroprojecto Construction by - Engil, Adriano, Edifer and Cerejo Project year - 1992 Year of completion - 1999 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 20 km2 Mean annual rainfall - 620,3 mm Mean annual runoff - 12410 x 1000 m3 Flood runoff - 106 m3/s Return period - 1000 years |
Reservoir area -
220 x 1000m2 Gross capacity - 854 x 1000m3 Effective storage - 650 x 1000m3 Normal water level (NWL)) - 801 m Maximum flood level (MFL) - 802,5 m Minimum operating level - 795,5 m |
| DAM | |
| Earthfill - Zoned
embankment Height above foundation - 20 m Height above streambed - 16 m Crest elevation - 804 m Crest length - 206 m Crest width - 6 m Volume of dam body - 86 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Right
bank Control type - Uncontrolled Spillway type - Chute spillway Sill elevation - 801 m Sill length - 38,02 m Maximum discharge - 98,6 m3/s Energy dissipation - Flip bucket |
Type - Conduit
under the embankment Section - d 1,5 m Maximum discharge - 1,2 m3/s Upstream control - Gate Downstream control - Hollow jet valve |