The long-term annual flow in the regulated system is estimated at 1,448,000 ML. The Water Sharing Plan limits average annual extractions to 391,900 ML (27%) to ensure that the majority (73%) of the long-term average annual flow is maintained for the health of the river's ecosystem.
Water that is extracted from the system, other than for basic landholder rights, must be authorised by an access licence. Water Access Licences are expressed either as a share component or as a volume.
The long-term annual extraction limit is based on the average level of recharge to each aquifer less an amount reserved for the environment and Aboriginal cultural heritage. The Water Sharing Plan specifies the share components and requirements for water that can be extracted under access licences.
Average Annual Recharge
Local Water Utility Access Licences
Aquifer Access Licences
Supplementary Water Access Licences
For more information on water sharing in NSW visit the NSW Office of Water website: