GOSTEI DAM |
|
| PURPOSE - Irrigation | |
| LOCATION | GENERAL FEATURES |
| District -
Bragança Municipality - Bragança Site - Gostei River Basin- Douro River - Gostei river |
Promoting entity
- Direcção Regional de Agricultura de Trás-os-Montes Owner - Junta de Agricultores de Gostei Engineering by - Hidroprojecto / AGRAR - UND HYDROTECHNIK GMBH Construction by - Conduril Project year - 1986 Year of completion - 1993 |
| HYDROLOGY | RESERVOIR |
| River basin area
- 4,5 km2 Mean annual rainfall - 275 mm Mean annual runoff - 1240 x 1000 m3 Flood runoff - 59 m3/s Return period - 500 years |
Reservoir area
- 149 x 1000m2 Gross capacity - 1384 x 1000m3 Effective storage - 1374 x 1000m3 Dead storage - 10 x 1000m3 Normal water level (NWL) - 758 m Maximum flood level (MFL) - 758,65 m Minimum operating level - 736 m |
| DAM | |
| Earthfill -
Homogeneous embankment Height above foundation - 35 m Height above streambed - 33 m Crest elevation - 759,65 m Crest length - 238 m Crest width - 8 m Foundation - Schist Volume of dam body - 188 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Left
bank Control type - Uncontrolled Spillway type - Chute spillway Sill elevation - 758 m Sill length - 30 m Maximum discharge - 35 m3/s Energy dissipation - Flip bucket |
Location - Thalweg Type - Conduit under the embankment Section - d 1,0 m Maximum discharge - 3,5 m3/s Upstream control - Gate 0,70x1,00 Downstream control - Hollow jet valve Energy dissipation - Hollow jet and scour holes |