The Adelaide region

Overview of the 2011–12 year

Annual rainfall across the Adelaide region was generally close to average for the 2011–12 year. This rainfall contributed to decreased inflows into the region's storages. The volume of water held in storages decreased during the 2011–12 year by 39,733 ML. Closing net water assets in the Adelaide region was 183,060 ML, compared to 223,633 ML at the end of the 2010–11 year. For more information on the region's water assets refer to Water accounting statements.

The Adelaide desalination plant started production, increasing the diversity of water sources available to supply the urban water system. During the year, desalinated water represented 3% of the water supplied to the urban water system, surface water harvested from the Adelaide region's catchment 66% and water imported from the River Murray 31%. Supply from the urban water system and irrigation scheme also increased compared to the 2010–11 year.

The key water account information for Adelaide is presented in the following table. Information on the uncertainty associated with the volumes presented in the table is provided in the relevant sections of the account.

 

Key water account information for the Adelaide region during the 2011–12 year


Contextual information: Climate overview
Climate Overview 2011–12 2010–11 Long–term average (1900–2011)
Rainfall: 569 mm Rainfall: 778 mm Rainfall: 576 mm
Evapotranspiration: 560 mm Evapotranspiration: 664 mm Evapotranspiration: 565 mm
For more detail on the Adelaide climate refer to Climate overview.

 

Contextual information: Water overview
Water overview Myponga River North Para River Onkaparinga River
Below mean annual flow Below mean annual flow Below mean annual flow
For more detail on streamflow in the Adelaide region refer to Water overview.

 

Water accounting statements
Accounting statements 2011–12 2010–11
Total water assets (as at 30 June) 190,077 228,582
Total water liabilities (as at 30 June) 7,018 4,948
Change in net water assets -40,575 24,289
Closing net water assets 183,059 223,634
For more detail on water assets and water liabilities refer to Water accounting statements.

 

 

Notes: Water resources and systems

 

Surface water storage
Surface water 30 June 2012 30 June 2011
Total capacity Volume % of capacity Volume % of capacity
197,871 ML 97,182 ML 49% 136,915 ML 69%
For more detail on surface water in the Adelaide region refer to Surface water.

 

Water abstractions
Groundwater Total water abstracted
2011–12 2010–11 Recent activity
Surface water: 104,445 ML Surface water: 96,927 ML Surface water abstractions and licensed groundwater abstractions have increased
Groundwater1: 17,379 ML Groundwater2: 44,608 ML
1Includes only licensed abstractions 2Includes 15,019 ML of licensed and 29,589 ML of unlicensed abstractions
For more detail on water abstraction in the Adelaide region refer to Surface water and Groundwater.

 

Urban water supply
Urban water supply
Total water supplied  
2011–12 2010–11 Recent activity
152,392 ML 141,264 ML The desalination plant started operation
For more detail on the urban water system in the Adelaide region refer to Urban water system.

 

Irrigation scheme supply
Irrigation schema supply
Total water supplied  
2011–12 2010–11 Recent activity
21,541 ML 18,531 ML Supply of recycled water and River Murray water have increased
For more detail on the irrigation scheme in the Adelaide region refer to Irrigation scheme.