VALE DO GAIO DAM |
|
PURPOSE - Irrigation / Hydroelectric | |
LOCATION | GENERAL FEATURES |
District -
Setúbal Municipality - Alcácer do Sal Site - Vale do Gaio River Basin - Sado River - Xarrama river |
Promoting entity
- INAG Owner - Assoc. de Benef. do Vale do Sado Engineering by - JAOHA Construction by - SETH e JAOHA Project year - 1936 Year of completion - 1949 |
HYDROLOGY | RESERVOIR |
River basin area
- 509 km2 Mean annual rainfal- 558 mm Mean annual runoff - 59 644 x 1 000 m3 |
Reservoir area - 5
500 x 1 000 m2 Gross capacity - 63 000 x 1 000 m3 Effective storage - 55 000 x 1 000 m3 Normal water level (NWL) - 40,5 m Maximum flood level (MFL) - 42,5 m Minimum operating level - 11 m |
DAM | |
Earthfill and
Rockfill Height above foundation - 51 m Height above streambed - 34 m Crest elevation - 44,5 m Crest length - 368 m Crest width - 6 m Foundation - Schist, conglomerate and sandstone Volume of dam body - 636 x 1 000 m3 |
|
SPILLWAY | BOTTOM OUTLET |
Location -
Saddle at left embankment Control type - Control misto Spillway type - Shaft spillway Sill elevation - 40,5 m Sill length - 2 x 80 + 20 m Number of gates - 1 radial gate Maximum discharge - 1000 m3/s Energy dissipation - Hydraulic jump |
Location -
Right bank Type - Rock tunnel Section - 2 x 1,2x1,5 m2 Maximum discharge - 70 m3/s Upstream control - 2 sluice gates Downstream control - 2 csluice gates Energy dissipation - Inexistent |
POWER PLANT | |
Type - Contiguous
to the dam Mean annual energy output - 2,6 GWh |