While back in 2006, I worked on this project:
Warragamba Deep Water Storage Recovery Project
In 2006, the Warragamba Deep Water Storage Recovery Project, part of the Metropolitan Water Plan, penetrated the base of the dam wall to allow the previously inaccessible lowest water in the reservoir
to be available.
Warragamba Dam - Wikipedia
en.wikipedia.org › wiki › Warragamba_Dam
It was not a wasted effort, but good to see it became a back up.
