REJEITADOS   DAM (PIRITES ALENTEJANAS)

PURPOSE - Tailings dam
LOCATION GENERAL FEATURES
District - Beja
Municipality - Aljustrel
Site - Monte do Morgado
River Basin - Sado
River - Barranco do Morgado
Promoting entity - Pirites Alentejanas, S.A
Owner - Pirites Alentejanas, S.A
Engineering by - Hidroprojecto
Construction by - Moniz da Maia, Serra e Fortunato
Project year - 1990
HYDROLOGY RESERVOIR
River basin area - 0,69 km2
Mean annual rainfall - 552 mm
Flood runoff  - 1,87 m3/s
Return period  - 
1 000 years
Reservoir area   - 490 x 1 000m2
Gross capacity - 3 460 x 1 000m3
Normal water level (NWL) - 155,75 m
Maximum flood level (MFL) - 156 m
DAM
Earthfill - Zoned embankment
Height above foundation -
 32 m
Height above streambed - 30 m
Crest elevation -
157 m
Crest length - 500 m
Crest width - 9 m
Foundation -
Schist and greywacke
Volume of dam body
- 289 x 1 000 m3
SPILLWAY BOTTOM OUTLET
Location - Saddle at left embankment
Control type - uncontrolled
Spillway type - Chute spillway
Sill elevation - 155,75 m
Sill length -
5 m
Maximum discharge - 0,9 m3/s
Energy dissipation - Steps
Type - Inexistent


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