Murray–Darling Basin
9.11 Delivery of water under inter-region agreement to surface water

Supporting information

The line item applies only to the Southern Basin of the Murray–Darling Basin (MDB) region. The volumetric value for the line item for the 2011–12 year was 1,491,312 ML. The volume comprises of 34,246 ML from the Glenelg River and 1,457,066 ML Snowy Hydro release received in the MDB region. The following table provides a breakdown of the volume.


Water transferred into MDB region in the 2011-12 year
Water resources plan area

Sustainable diversion limit area

 Volume (ML) for the 2011–12 year 



Snowy-Hydro Releases (ML)

Transfers from the Glenelg River  (ML)

Total (ML)

SW4 Wimmera–Mallee SS9 Wimmera–Mallee




SW8 Murrumbidgee NSW SS15 Murrumbidgee NSW




SW7 NSW Murray and Lower Darling SS14 NSW Murray




SW2 Vic. Murray SS2 Vic. Murray




Total for the whole region




Further information on claim for Glenelg River water transfer

Under a Victorian bulk entitlement, Grampians Wimmera–Mallee Water is able to transfer water to the Wimmera–Mallee supply system (within the MDB region) from:

  • the Glenelg River upstream of and including Rocklands Reservoir
  • the first and second Wannon creeks upstream of and including the weirs.


Further information on claim for Snowy Hydro releases

Snowy Hydro Limited delivers water from the Snowy Mountains Scheme (outside of the MDB region based on its definition) to the Tumut River and the Murray River, under the terms of the Snowy Water Licence. This value is included as a transfer.

Line item 1.5 Inter-region claim on water explains in more detail the arrangements for the calculation of the required annual release (RAR).


A water transfer not recognised in the water accounting statements

Toowoomba regional council has entitlements within the Moreton water resource plan area that is within the South East Queensland region. Toowoomba regional council receives water from Perseverance, Cressbrook and Wivenhoe storages (through Cressbrook Reservoir) for urban purposes within the MDB region. This water supplements the Toowoomba regional council's diversions within the MDB region. This transfer arrangement delivers water directly into the Toowoomba regional council's distribution network, which is excluded from the MDB region. The transferred volume, 6,165 ML, for the 2011–12 year from Cressbrook and Perseverance storages is therefore not reported in the water accounting statements for the MDB region.


Quantification approach

Data source

(1) Snowy Hydro Limited: Snowy Hydro transfers in the Water Operations Report 2011–12; (2) NSW Office of Water's water accounting section; and (3) Murray–Darling Basin Authority: water audit monitoring data received from Victoria (21 March 2013) and stored in the HYDRO database.

Provided by

Bureau of Meteorology (the Bureau), NSW Office of Water and Snowy Hydro Limited.


Water audit monitoring data were derived from measured data. Other data were measured or extracted from reports by Snowy Hydro Ltd.

Assumptions, limitations, caveats and approximations


Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

This line item corresponds to line item 9.11 'Delivery of water under inter-region agreement' reported in the 2011 Account.