The water of the Macquarie River and the Cudgegong River flow into the lake, which, when full, purportedly contains three and a half times as much water as Sydney Harbour.
The water of the Macquarie River and the Cudgegong River flow into the lake, which, when full, has a capacity of approximately 1,189,000 megalitres. Purportedly, three and a half times as much water as Sydney Harbour.