Murray–Darling Basin
17.6 Surface water diversions – other statutory rights

Supporting information
Quantification approach
Comparative year

Supporting information

The volumetric value for the line item for the 2011–12 year was 68,589 ML. The line item represents diversions made under water rights other than entitlements. These rights include land owner basic rights, riparian rights, stock and domestic rights. The following table summarises the information for the line item for the Murray–Darling Basin (MDB) region.

Diversions made under other statutory rights in the MDB region in the 2011–12 year
Surface water resource plan (WRP) area	Sustainable diversion limit (SDL) area		State	Volume (ML) for the 2011–12 year	Data source
Surface water resource plan (WRP) area	Code	Name	State	Volume (ML) for the 2011–12 year	Data source
SW15 NSW Border Rivers	SS23	NSW Border Rivers	NSW	10,752	Water Sharing Plan for the NSW Border Rivers Regulated River Water Source 2009 Water Sharing Plan for the Tenterfield Creek Water Source 2003 Water Sharing Plan for the NSW Border Rivers Unregulated and Alluvial Water Sources 2012
SW11 Barwon–Darling Watercourse	SS19	Barwon–Darling	NSW	825	Draft Water Sharing Plan for the Barwon–Darling Unregulated and Alluvial Water Sources
SW12 NSW Intersecting Streams	SS17	NSW Intersecting Streams	NSW	2,456	Water Sharing Plan for the Intersecting Streams Unregulated and Alluvial Water Sources 2011
SW14 Gwydir	SS22	Gwydir	NSW	9,555	Water Sharing Plan for the Gwydir Regulated River Water Source 2002 Water Sharing Plan for the Rocky Creek, Cobbadah, Upper Horton and Lower Horton Water Source 2003
SW13 Namoi	SS21	Namoi	NSW	6,071	Water Sharing Plan for the Upper Namoi and Lower Namoi Regulated River Water Sources 2003 Water Sharing Plan for the Phillips Creek, Mooki River, Quirindi Creek and Warrah Creek Water Sources 2003 Water Sharing Plan for the Peel Valley Regulated, Unregulated, Alluvium and Fractured Rock Water Sources 2010
SW10 Macquarie–Castlereagh	SS20	Macquarie–Castlereagh	NSW	8,407	Water Sharing Plan for the Macquarie and Cudgegong Regulated Rivers Water Source 2003 Water Sharing Plan for the Castlereagh River above Binnaway Water Source 2003 Water Sharing Plan for the Castlereagh (below Binnaway) Unregulated and Alluvial Water Sources 2011
*Sub-total Northern Basin*				*38,066*
SW9 Lachlan	SS16	Lachlan	NSW	10,697	Water Sharing Plan for the Lachlan Regulated River Water Source 2003 Water Sharing Plan for the Mandagery Creek Water Source 2003
SW8 Murrumbidgee NSW	SS15	Murrumbidgee NSW	NSW	10,605	Water Sharing Plan for the Murrumbidgee Regulated River Water Source 2003 Water Sharing Plan for the Adelong Creek Water Source 2003 Water Sharing Plan for the Tarcutta Creek Water Source 2003
SW7 NSW Murray and Lower Darling	SS18	Lower Darling	NSW	5,771	Water Sharing Plan for the NSW Murray and Lower Darling Regulated Rivers Water Sources 2003 Water Sharing Plan for the Lower Murray–Darling Unregulated and Alluvial Water Sources 2011
SW7 NSW Murray and Lower Darling	SS14	NSW Murray	NSW	3,450	Water Sharing Plan for the Upper Billabong Water Source 2003 Water Sharing Plan for the NSW Murray and Lower Darling Regulated Rivers Water Sources 2003 Water Sharing Plan for the Murray Unregulated and Alluvial Water Sources 2011
*Sub-total Southern Basin*				*30,523*
Total for the region				68,589

The above table shows diversions made under other statutory rights in water resource plan areas within New South Wales. No information was available for the other SDL areas for this line item.

Quantification approach

Data source

See the 'Data source' stated in the table provided under 'Supporting information'.

Provided by

Bureau of Meteorology (the Bureau).

Method

Diversion volumes were estimated to be equal to the value of the total volumetric basic landholder right as stipulated in the water sharing plan at commencement of the plan.

Assumptions, limitations, caveats and approximations

For New South Wales, no information on measured diversion volumes of other statutory right was available. The diversion volumes were estimated as described in above 'Method'.

Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

A calculation error in the 2011 Account resulted in the restatement of the 2010–11 year volume. An error resulted in underestimation of diversion volumes related to other statutory right for Namoi SDL area in the 2011 Account. Associated correction was 365 ML. The respective volumes associated with the change are detailed in the following table.

Restatement of comparative year information made for the line item 17.6 Surface water diversions – other statutory rights
2011 Account line item	Segment	2012 Account volume for the 2010–11 year (ML)	2011 Account volume for the 2010–11 year (ML)	Difference due to error correction (ML)
17.6 Diversions: other statutory rights	Northern Basin	28,516	28,151	365
	Southern Basin	19,135	19,135	0
	Whole region	47,651	47,286	365

Murray–Darling Basin17.6 Surface water diversions – other statutory rights