Groundwater sustainable yield
Responses from the states and territories describe how each jurisdiction determines
groundwater sustainable yield (refer to table below). The volumes of groundwater
sustainable yield for 200405 are illustrated in the accompanying map.
Method for determining groundwater sustainable yield (where assessed)
|
|
|
ACT |
NSW |
NT |
QLD |
SA |
TAS |
VIC |
WA |
National |
|
1 |
87 |
53 |
15 |
16 |
17 |
62 |
43 |
294 |
|
1 |
71 |
6 |
0 |
1 |
17 |
0 |
17 |
113 |
|
0 |
9 |
46 |
6 |
8 |
0 |
62 |
10 |
141 |
|
0 |
6 |
0 |
9 |
5 |
0 |
0 |
3 |
23 |
|
0 |
1 |
1 |
0 |
2 |
0 |
0 |
13 |
17 |
Australian Capital Territory
The sustainable yield for the Australian Capital Territory is based on a percentage
of groundwater recharge.
New South Wales
The major method for calculation of sustainable yield in New South Wales is
to estimate groundwater recharge from rainfall accessions.
Northern Territory
In the Northern Territory , the sustainable yield in the incorporated groundwater
management units (nine areas) is generally based upon a percentage of recharge.
Sustainable yield in the unincorporated areas is based on a simple analytical
calculation.
Tasmania
In each of Tasmania 's 17 groundwater management units, the sustainable yield
for groundwater has been determined as a percentage of recharge. Sustainable
yields were estimated as part of the Australian Water Resources Assessment
2000 and more recent data is not available. Sustainable yield across
the groundwater management units and unincorporated areas was estimated to
be between 449 and 1 315 046 megalitres.
Queensland
In Queensland, 15 groundwater management units have calculated sustainable
yields, of which half are based on detailed numerical modelling, and the other
half are based on simple analytical calculations.
South Australia
Sustainable yield determinations in South Australia are generally a percentage
of recharge with adjustment for groundwater level trends.
Victoria
The sustainable yield for groundwater has been determined for 62 of Victoria
's 65 groundwater management units. In each case a simple analytical method
was used to determine the sustainable yield. Assessments of the sustainable
yield for all groundwater management units have taken into account the potential
for surface water and groundwater interaction
Western Australia
Of the 43 groundwater management units in Western Australia with sustainable
yield determinations, 26 were determined for the entire groundwater management
unit. The others covered between 50 per cent and 93 per cent of the groundwater
management unit. Most sustainable yield estimates were determined using a percentage
of recharge or simple analytical calculations. Yenart was the only groundwater
management unit for which sustainable yield was determined for combined groundwater
and surface water resources.
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Sustainable yield - groundwater July 2004 - June
2005
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Download high resolution Map:
Sustainable yield - groundwater July 2004 - June 2005 (1.8 Meg )
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