APARTADURA DAM

PURPOSE -   Water supply / Irrigation
LOCATION GENERAL FEATURES
District -   Portalegre
Municipality - Marv„o
Site - Apartadura
River Basin -  Tejo
River - Reveladas river
Promoting entity - INAG
Owner (RSB) - INAG
Engineering by - COBA
Construction by - CPTP
Project year - 1983
Year of completion -  1993
HYDROLOGY  RESERVOIR
River basin area - 8,4 km2
Mean annual rainfall - 838 mm
Mean annual runoff - 2650 x 1000 m3
Flood runoff - 80 m3/s
Return period - 1000 years
Reservoir area - 480 x 1000m2
Gross capacity - 7465 x 1000m3
Effective storage - 6980 x 1000m3
Dead storage - 485 x 1000m3
Normal water level (NWL) - 595 m
Maximum flood level (MFL) - 595,95 m
Minimum operating level - 568 m
DAM
Rockfill - Zoned embankment with upstream facing
Height above foundation - 46,5 m
Height above streambed - 44,5 m
Crest elevation - 598 m
Crest length - 284 m
Crest width - 8 m
Foundation - Schist
Volume of dam body - 454 x 1000 m3
SPILLWAY BOTTOM OUTLET
Location - Right bank
Control type - Uncontrolled
Spillway type -  Chute spillway
Sill elevation - 595 m
Sill length - 25,42 m
Maximum discharge -
45 m3/s
Energy dissipation -  Flip bucket
Location - Right bank
Type - Conduit under the embankment
Section - 1,5 m x var
Maximum discharge - 14,5 m3/s
Upstream control - Sluice gate
Downstream control - Sluice gate
Energy dissipation - Hydraulic jump


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