Warragamba Dam: would a higher wall have prevented Sydney flooding?

As flood water spills into the Hawkesbury-Nepean Valley, NSW’s plan to increase the reservoir’s height by 14 metres has come to the fore. But experts say it won’t reduce flood risk when it really buckets

• Follow the Australia floods liveblog

Sitting beyond the western suburbs, Sydney’s main reservoir can hold about 2,000bn litres of water, equivalent to about four times what’s in Sydney Harbour.

Continue reading...

from World news | The Guardian https://ift.tt/3cbIbdR