Murray–Darling Basin
18.18 Other groundwater decreases

Supporting information

The volumetric value for the line item for the 2012–13 year was 90,558 ML. The line item represents the reduction of supplementary entitlements during the 2012–13 year in New South Wales as stipulated in water sharing plans (see the following table). New South Wales supplementary access licence volumes are included in line item 2.5 Other groundwater assets as groundwater assets. These licence volumes are set to decrease each year until they disappear completely to bring all groundwater entitlements to a level of extraction that is sustainable.

Other groundwater decreases in the MDB region during the 2012–13 year
Groundwater resource plan area

Groundwater sustainable diversion limit area

State

 Volume (ML) for the 2012–13 year 

Code

Name
GW15 Gwydir Alluvium GS24 Lower Gwydir Alluvium NSW 1,978
GW14 Namoi Alluvium GS29 Lower Namoi Alluvium NSW 2,087
GS47 Upper Namoi Alluvium NSW 4,022
GW12 Macquarie-Castlereagh Alluvium GS26 Lower Macquarie Alluvium NSW 240
GW11 Lachlan and South Western Fractured Rock GS19 Kanmantoo Fold Belt NSW 57,051
Sub-total Northern Basin 65,378
GW11 Lachlan and South Western Fractured Rock GS10 Adelaide Fold Belt   4,274
GW10 Lachlan Alluvium GS25 Lower Lachlan Alluvium NSW 2,124
GW9 Murrumbidgee Alluvium GS28 Lower Murrumbidgee Alluvium (deep; Calivil Formation and Renmark Group) NSW 4,120
GW8 Murray Alluvium GS27 Lower Murray Alluvium (Deep: Renmark Group and Calivil Formation) NSW 9,556
GW3 Wimmera–Mallee (groundwater) GS09 Wimmera–Mallee (sedimentary plain, highlands and deep) Vic.

5106
Sub-total Southern Basin 25,180
Total for the region 90,558

Quantification approach

Data source

Data was sourced from jurisdictional groundwater sharing plans.

Provided by

Bureau of Meteorology (the Bureau).

Method

Values were extracted from jurisdictional groundwater sharing plans.

Assumptions, limitations, caveats and approximations

It has been assumed that groundwater basic right is included in the permissible consumptive volume provided in relevant water sharing plan if no information is available to decide otherwise.

Uncertainty information

The uncertainty estimate was not quantified.