The Ord region

Overview of the 2011–12 year

Rainfall across the entire Ord region was generally above average for the 2011–12 year. These rainfall conditions, compared to the record high rainfall observed during the 2010–11 year, contributed to decreased inflows into the storages. The volume of water held in storages decreased during the 2011–12 year by 4,372,710 ML: a substantial change from the previous year, where water storage increased by 6,323,529 ML. Closing net water assets in the Ord region was 10,465,536 ML, compared to 14,840,722 ML at the end of the 2010–11 year. For more information on the region's water assets refer to Water accounting statements.

The key water account information for the Ord region during the 2011–12 year are 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 Ord region during the 2011–12 year


Contextual information: Climate overview
Climate Overview 2011–12 2010–11 Long–term average
(1900–2011)
Rainfall: 771 mm Rainfall: 1,390 mm Rainfall: 673 mm
Evapotranspiration: 717 mm Evapotranspiration: 889 mm Evapotranspiration: 541 mm
For more detail on the Ord climate refer to Climate overview.

 

Contextual information: Water overview
Water overview Upper Ord River Negri River Lower Ord River
Below mean annual flow Below mean annual flow Below mean annual flow
For more detail on streamflow in the Ord region refer to Water overview.

 

Water accounting statements
Accounting statements 2011–12 2010–11
Total water assets (as at 30 June) 10,775,781 15,148,491
Total water liabilities (as at 30 June) 310,245 307,769
Change in net water assets (4,375,186) 6,325,950
Closing net water assets 10,465,536 14,840,722
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 2011 30 June 2010
Total capacity Volume % of capacity Volume % of capacity
10,923,678 ML 10,759,396 ML 98.5% 15,078,047 ML 138%
For more detail on surface water storage in the Ord region refer to Surface water.

 

Water abstractions
Groundwater Total water abstracted
2011–12 2010–11 Recent activity
Surface water: 175,813 ML Surface water: 173,924 ML Water abstraction for private users has increased
Groundwater: 13,108 ML Groundwater: 9,686 ML
For more detail on water abstraction in the Ord region refer to Surface water and Groundwater.

 

Urban water supply
Urban water system
Total water supplied  
2011–12 2010–11 Recent activity
2,264 ML 2,204 ML Urban water supply remains relatively unchanged
For more detail on the urban water system in the Ord region refer to Surface water and Groundwater.

 

Irrigation scheme supply
Irrigation scheme
Total water supplied  
2011–12 2010–11 Recent activity
155,362 ML 161,155 ML Diversion of surface water for irrigation has decreased
For more detail on the irrigation scheme in the Ord region refer to Surface water and Groundwater.