RIO DA MULA DAM

PURPOSE - Water supply
LOCATION GENERAL FEATURES
District  - Lisboa
Municipality - Cascais
Site - Malveira da Serra
River Basin - Ribeiras do Oeste
River - Mula river
Promoting entity - C M de Cascais
Owner - Serviços Municipalizados de Cascais
Engineering by - Engº Ressano Garcia e APAGEL
Construction by - Tomás de Oliveira
Project year - 1963
Year of completion - 1969
HYDROLOGY RESERVOIR
River basin area - 2,9 km2
Flood runoff -  22 m3/s
Reservoir area   - 45 x 1 000 m2
Gross capacity - 340 x 1 000 m3
Effective storage - 230 x 1 000 m3
Dead storage - 110 x 1 000 m3
Normal water level (NWL) -  149 m
Maximum flood level (MFL) - 149,6 m
DAM
Earthfill - Homogeneous embankment
Concrete -
Gravity
Composite dam - Yes
Height above foundation -
 22 m
Height above streambed - 18 m
Crest elevation -
149,6 / 150,6 m
Crest length - 192 m
Crest width - 2,5 / 5,0 m
Foundation -
Granite
SPILLWAY BOTTOM OUTLET
Location - Dam body
Control type - Uncontrolled
Spillway type - Over the dam
Sill elevation - 149 m
Sill length -
7,5 m
Maximum discharge - 7,8 m3/s
Energy dissipation - Hydraulic jump
Location - Thalweg
Type - Through the dam
Section - d 0,30 m
Upstream control  - Comporta mural
Downstream control  - Butterfly valve
Energy dissipation - Inexistent


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