When was the last time Warragamba Dam spill?
On 2 March 2012, it overflowed for the first time in fourteen years. It overflowed again in 2016, March 2021 and March 2022.
How many times has Warragamba Dam overflowed?
Since it was completed in 1960, the dam has spilled nearly 50 times.
Is Warragamba Dam spilling over?
Warragamba Dam in NSW is spilling over amid severe flooding.
What would happen if Warragamba Dam failed?
It is estimated it could kill 238 greater gliders, a vulnerable species seriously affected by the recent bushfire disaster. Officials expressed concern that Water NSW’s environmental assessments did not adequately assess risks to other endangered species, and failed to consider the impact of last season’s bushfires.
When was Warragamba Dam wall raised?
In the late 1980s the dam wall was strengthened and raised by five metres. In the early 2000s an auxiliary spillway was built to divert floodwaters around the dam in a rare and extreme flood so as to protect the dam and ensure it remains safe in an extreme flood.
How full is Warragamba Dam now?
Total
| Storage (recorded date) | Warragamba Dam Monday 02 May | Cataract Dam Monday 02 May |
|---|---|---|
| Storage Capacity (ML) | 2,027,000 | 97,190 |
| Current Volume (ML) | 2,001,121 | 95,916 |
| Percent Full % | 98.7 | 98.7 |
| Net Change in past week % | -0.8 | 0.0 |
Where does Warragamba Dam spill into?
Broken Bay
This water flows down the Warragamba River into the Hawkesbury-Nepean River and eventually enters the sea at Broken Bay. An auxiliary spillway was completed in 2002 to protect the dam from extreme floods.
How full is Warragamba now?
Total
| Storage (recorded date) | Warragamba Dam Sunday 24 April | Cataract Dam Sunday 24 April |
|---|---|---|
| Storage Capacity (ML) | 2,027,000 | 97,190 |
| Current Volume (ML) | 2,019,021 | 96,085 |
| Percent Full % | 99.6 | 98.9 |
| Net Change in past week % | -0.4 | -1.1 |
Who operates Warragamba Dam?
Eraring Energy
Eraring Energy owns and operates the 50–megawatt hydro–electric power station at Warragamba which generates green power only when there is a high level of water in the lake. WaterNSW officers inspect and monitor Warragamba Dam through a network of more than five kilometres of galleries.
Why was Warragamba built?
Warragamba was the last and by far the biggest of the concrete dams built during the twentieth century to supply Sydney’s ever-growing water needs. When completed in 1960, it was the world’s tallest and largest domestic water supply dam built on stone foundations. It was also the end of an era.
What does the word Warragamba mean?
The name Warragamba comes from the aboriginal words Warra and Gamba meaning water running over rocks.
What happened at Warragamba Dam?
Warragamba Dam spills over for the first time in 14 years, providing quite a spectacle for a small crowd of police, water catchment staff and sightseers. The Sydney Catchment Authority had anticipated opening the floodgates on Thursday night, then yesterday morning.
What caused Sydney’s Water Reservoir to spill?
Early last night, after days of rain forced about 1600 people from their homes, Sydney’s drinking water reservoir reached capacity and began to spill for the first time since August 1998.
How much water is being released from Sydney’s dams each day?
A Sydney Catchment Authority spokeswoman, Debbie Low, estimated about 135,000 megalitres of water would be released each day for several days.