Murray–Darling Basin

8.1.3.6 Allocation on regulated flows remaining – general and low-security, other lumped holders

Supporting information

The volumetric value for the line item at the end of 2009–10 is 1,135,281 ML. The following table provides a breakdown of the volumes.

Allocation remaining within the Murray–Darling Basin (MDB) region – general and low-security, other lumped holders
Region no.	Region name	State	Volume as at 30 June 2009 (ML)	Volume as at 30 June 2010 (ML)
5	Border Rivers	Qld/NSW	53,127	28,359
5.1	Border Rivers – Qld	Qld	n/a	n/a
5.2	Border Rivers – NSW	NSW	53,127	28,359
6	Gwydir	NSW	34,652	10,750
7	Namoi	NSW	62,188	38,282
8	Macquarie–Castlereagh	NSW	79,580	41,240
10	Lower Darling	NSW	4,603	12,197
11	Lachlan	NSW	33,333	33,800
14	Goulburn–Broken	Vic	–	–
15	Loddon	Vic	–	–
16	Campaspe	Vic	–	–
17	Murrumbidgee	NSW/ACT	220,602	480,580
17.1	Murrumbidgee – NSW	NSW	220,602	480,580
17.2	Murrumbidgee – ACT	ACT	–	–
18	Murray	NSW/Vic/SA	171,218	490,073
18.1	Murray – NSW	NSW	171,218	490,073
18.2	Murray – Vic	Vic	–	–
18.3	Murray – SA	SA	–	–
	Total		659,302	1,135,281

– = no data available; n/a = not applicable

New South Wales volumes include the licence class of general security allocation remaining:

for bulk (i.e. within a trust) and individual irrigation
for environment
where the purpose is generally not known.

No information specific to this entitlement class available for Victoria. See Line item 8.1.9.7 Allocation on regulated flows remaining – other lumped holders for data on all classes lumped together.

In Queensland, the resource operation plans (ROPs) distinguish between ‘high and medium priority of supplemented water allocation’ (names used in Queensland, corresponding to high and general/low-security classes of water access entitlements, respectively, in the National Water Account 2010, or the 2010 Account). In most cases, what the ROPs classify as high priority actually corresponds to urban purpose. The water audit monitoring (WAM) data, however, only distinguish between ‘supplemented’ and ‘unsupplemented’ entitlements, distinguishing for ‘supplemented’ only, urban purpose from all other purposes. For this reason, the 2010 Account reports all ‘supplemented’ entitlements in Queensland under ‘other lumped WAE’ class. The 2010 Account further splits Queensland ‘supplemented’ entitlements between urban purpose, reported under ‘urban holder’ (Line item 8.1.9.4), and all other purposes, reported under ‘individual irrigator holder’ (Line item 8.1.9.2) and ‘other lumped holders’ (Line item 8.1.9.7).

No other state has high or general/low-security classes of entitlements.

Quantification approach

Data source

Australian Capital Territory: Water Audit Monitoring Report 2009–10 (30 November 2010).

New South Wales: NSW Office of Water’s Water Accounting section.

Queensland: Water Audit Monitoring Report 2009–10 (31 January 2011).

South Australia: Water Audit Monitoring Report 2009–10 (22 February 2011).

Victoria: Water Audit Monitoring Report 2009–10 (19 January 2011).

Note: Water audit monitoring report (WAM) data are stored in the Murray–Darling Basin Authority (MDBA) HYDRO database.

Data provider

MDBA.

Method

Water sharing plans, water resource plans and the water legislation of each state specify:

the classes of licences that are permitted to carry forward any unused volumes
rules attached to the volume that may be carried forward.

Allocation remaining (carryover) is calculated by the states and provided to the MDBA.

Uncertainty

The uncertainty estimate for the values provided in the line item is +/–10%.

Approximations, assumptions, caveats/limitations

Victorian and Queensland WAM data received by MDBA did not allow separation into high and general/low-security classes; therefore, this item contains only New South Wales data.