COIMBRA DAM

PURPOSE - Landscape valorization /Irrigation / Urban and industrial water supply / Recreation
LOCATION GENERAL FEATURES
District - Coimbra
Municipality - Coimbra
Site - Coimbra
River Basin - Mondego
River - Mondego river
Promoting entity - INAG
Owner (RSB) - INAG
Engineering by - Hidroprojecto
Construction by - SEOP
Project year - 1978
Year of completion - 1981
HYDROLOGY RESERVOIR
River basin area - 4950 km2
Mean annual rainfall - 1230 mm
Mean annual runoff - 2333059 x 1000 m3
Flood runoff - 2000 m3/s
Return period - 1000 years
Reservoir area - 925 x 1000m2
Gross capacity - 1600 x 1000m3
Effective storage - 620 x 1000m3
Dead storage - 980 x 1000m3
Normal water level (NWL) - 18 m
Maximum flood level (MFL) - 19 m
Minimum operating level - 17,3 m
DAM
Type - Gate structure dam
Height above foundation - 39,2 m
Height above streambed - 6,2 m
Crest elevation - 22 m
Crest length - 202,4 m
Foundation - Marl
Volume of dam body - 48,4 x 1000 m3
SPILLWAY
Location - Dam body
Control type - Controlled
Spillway type - Barrage gates
Sill elevation - 14,3 m
Sill length - 9 x 15,4 m
Number of gates - 9 sector gates
Maximum discharge -
1200 m3/s
Energy dissipation - Hydraulic jump

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