Environmentalists call for action on rivers
The not-for-profit International RiverFoundation says pollution and poor land use practices have hurt all of the nation's urban rivers and about a third of its rural rivers.
Chief executive Matthew Reddy says it makes economic sense to take better care of the waterways.
"If you have unhealthy poor quality water you can limit the types of uses that you can have for that water, so you can't use it for things like agriculture, you can't use it for drinking water," he said.
"The International RiverFoundation doesn't expect capital city rivers to look like mountain streams, we realise these that these rivers work hard but we can make very solid improvement."