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Wivenhoe dam
Type of dam Earth and rockfill
Storage  
Catchment area 7020km2
Average annual rainfall  
(Upper Brisbane river) 880mm
Full supply level (FSL) EL 67
Storage capacity at FSL 1.15M megalitres
Inundated area at FSL 10,820ha
Temporary flood storage available 1.4M megalitres
Embankment  
Crest level EL 79
Total crest length 2.3km
Height 59m
Total volume of embankment fill 4x106m3
Spillway  
Type Gated concrete spillway
Five radial spillway gates 12m wide x 16.6m high
Design flood max water level EL 77
Design flood max outflow 11,700m3/sec