General
Warragamba Dam spilling Sydney Harbour’s worth of water each day into Sydney basin
Warragamba Dam is spilling a Sydney Harbour’s worth of water each day into the already swollen Sydney basin.
Key points:
- The dam has been filling steadily since February 2020
- Warragamba would have needed to be taken down to 25 per cent of storage capacity before the rain in order to cope with the volume, WaterNSW said
- Modelling by WaterNSW showed that in the last seven days, 1,500 gigalitres of water had flowed into the dam
WaterNSW reported on Sunday that the spillway was releasing 450 gigalitres a day (450 billion litres), a rate that could go up if the dam storage levels continue to rise due to the heavy rain.
That daily spill equates to nearly a quarter of the dam’s total capacity of 2,000 gigalitres.
It is not much less than the 567…
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