ENXOÉ DAM |
|
PURPOSE - Water supply | |
LOCATION | GENERAL FEATURES |
District -
Beja Site - Serpa River Basin - Guadiana River - Enxoé river |
Promoting entity
- Instituto da Água Owner (RSB) - C M Serpa e C M Mértola Engineering by - Hidrotécnica Portuguesa Construction by - EDIFER Project year - 1995 Year of completion - 1998 |
HYDROLOGY | RESERVOIR |
River basin area
- 60,8 km2 Mean annual rainfall - 602 mm Mean annual runoff - 8630 x 1000 m3 Flood runoff - 180 m3/s Return period - 500 years |
Reservoir area -
2050 x 1000m2 Gross capacity - 10400 x 1000m3 Effective storage - 9500 x 1000m3 Dead storage - 900 x 1000m3 Normal water level (NWL) - 175 m Maximum flood level (MFL) - 177,1 m Minimum operating level - 160,75 m |
DAM | |
Earthfill - Zoned
embankment Height above foundation - 23 m Height above streambed - 20,5 m Crest elevation - 179 m Crest length - 415 m Crest width - 4 m Volume of dam body - 240 x 1000 m3 |
|
SPILLWAY | BOTTOM OUTLET |
Location - Right
bank Control type - Uncontrolled Spillway type - Chute spillway Sill elevation - 175 m Sill length - 5 m Maximum discharge - 33,4 m3/s Energy dissipation - Steps |
Location -
Left bank Type - Rock tunnel Maximum discharge - 5,3 m3/s Upstream control - Fixed roller gate Downstream control - Hollow jet valve Energy dissipation - Hollow jet and scour holes |