Canberra
Water resources and systems

Introduction

The following set of notes provides water accounting statements for each of the water stores and systems within the Canberra region during the 2013–14 year. Information on all water flows to and from each water store and system are presented in this note, including between-store flows and transfers that are not presented in the consolidated water accounting statements (which are shown in italics).

For more information about the region, please refer to the General description section of the 'Contextual information'. For more information on between-store flows and transfers that occur in the region, please refer to the Supporting information note.

 

Surface water

 

Table 1  Statement of Water Assets and Water Liabilities as at 30 June 2014 for the surface water store
Water assets

2014
(ML)

2013
(ML)

Surface water  
Storages219,448181,290
Unregulated river––
Regulated river––
Lakes and wetlands 38,74234,631
Total surface water assets258,190 215,921
   
Water liabilities  
Surface water liability  
Surface water allocation remaining: individual users00
Surface water allocation remaining: urban water system0 0
Total surface water liabilities0 0
   
Opening net water assets215,921240,761
Change in net water assets42,269(24,840)
Closing net water assets258,190215,921



Table 2  Statement of Changes in Water Assets and Water Liabilities for the year ended 30 June 2014 for the surface water store
Water asset increases2014
(ML)		2013
(ML)
Surface water increases  
Precipitation on surface water13,65011,604
River inflow to region205,263200,283
Groundwater discharge––
Runoff to surface water391,658463,836
Discharge from urban water system32,58831,702
Total surface water increases643,159707,425
   
Water liability decreases  
Surface water liability decreases  
Adjustment and forfeiture of surface water allocation: individual users1,832 1,832
Adjustment and forfeiture of surface water allocation: urban water system22,30523,162
Total surface water liability decreases24,137 24,994
   
Water asset decreases  
Surface water decreases  
Evaporation from surface water18,433 20,516
River outflow from the region468,263 508,738
Discharge from surface water to groundwater––
River and floodplain leakage, evaporation and errors––
Surface water diversions – other statutory rights––
Entitled diversion of non-allocated surface water to users1,156 1,648
Entitled diversion of non-allocated surface water to urban water system37 66
Total surface water decreases487,889530,968
   
Water liability increases  
Surface water liability increases  
Surface water allocation announcements: individual users1,832 1,832
Surface water allocation announcements: urban water system71,000 71,000
Total surface water liability increases72,832 72,832
   
Balancing item—surface water64,306153,459
   
Change in net water assets42,269(24,840)


Table 3  Statement of Water Flows for the year ended 30 June 2014 for the surface water store
Water inflows2014
(ML)		2013
(ML)
Surface water inflows  
Precipitation on surface water13,650 11,604
River inflow to region205,263200,283
Groundwater discharge––
Runoff to surface water391,658463,836
Discharge from urban water system32,58831,702
Total surface water inflows643,159707,425
   
Water outflows  
Surface water outflows  
Evaporation from surface water18,433 20,516
River outflow from the region468,263508,738
Discharge from surface water to groundwater––
River and floodplain leakage, evaporation and errors––
Surface water diversions – other statutory rights––
Entitled diversion of non-allocated surface water to users1,1561,648
Entitled diversion of non-allocated surface water to urban water system37 66
Entitled diversion of allocated surface water to users–0
Entitled diversion of allocated surface water to urban water system48,69547,838
Total surface water outflows536,584578,806
   
Balancing item—surface water64,306153,459
   
Opening water storage215,921240,761
Change in water storage42,269(24,840)
Closing water storage258,190215,921


 

Groundwater


Table 4  Statement of Water Assets and Water Liabilities as at 30 June 2014 for the groundwater store
Water assets2014
(ML)		2013
(ML)
Groundwater  
Water table aquifer––
Underlying aquifers––
Total groundwater assets––
   
Water liabilities  
Groundwater liability  
Groundwater allocation remaining: individual users––
Total groundwater liabilities––
   
Opening net water assets––
Change in net water assets––
Closing net water assets––



Table 5  Statement of Changes in Water Assets and Water Liabilities for the year ended 30 June 2014 for the groundwater store
Water asset increases2014
(ML)		2013
(ML)
Groundwater increases  
Groundwater inflow from outside region––
Recharge from landscape––
Recharge from surface water to groundwater––
Leakage from urban water system2,081 2,803
Total groundwater increases2,0812,803
   
Water liability decreases  
Groundwater liability decreases  
Adjustment and forfeiture of groundwater allocation: individual users851 851
Total groundwater liability decreases851 851
   
Water asset decreases  
Groundwater decreases  
Groundwater outflow to outside region––
Discharge to landscape––
Discharge to surface water––
Groundwater extractions – other statutory rights435 435
Entitled extraction of non-allocated groundwater to users459585
Total groundwater decreases894 1,020
   
Water liability increases  
Groundwater liability increases  
Groundwater allocation announcements: individual users851 851
Total groundwater liability increases851 851
   
Balancing item—groundwater 1,1871,783
   
Change in net water assets0 0


Table 6  Statement of Water Flows for the year ended 30 June 2014 for the groundwater store
Water inflows2014
(ML)		2013
(ML)
Groundwater inflows  
Groundwater inflow from outside region––
Recharge from landscape––
Recharge from surface water to groundwater––
Leakage from urban water system2,0812,803
Total groundwater inflows2,0812,803
   
Water outflows  
Groundwater outflows  
Groundwater outflow to outside region––
Discharge to landscape––
Discharge to surface water––
Groundwater extractions – other statutory rights435 435
Entitled extraction of non-allocated groundwater to users459 585
Entitled extraction of allocated groundwater to users––
Total groundwater outflows894 1,020
   
Balancing item—groundwater1,1871,783
   
Opening Water Storage0 0
Change in water storage0 0
Closing Water Storage0 0

 

Urban water system

  

Table 7  Statement of Water Assets and Water Liabilities as at 30 June 2014 for the urban water system
Water assets2014
(ML)		2013
(ML)
Urban water system  
Urban water supply system898 953
Wastewater system––
Recycled water system2 2
Urban claim on surface water0 0
Total urban water system assets900 955
   
Opening net water assets955 906
Change in net water assets(55)49
Closing net water assets900 955

 


Table 8  Statement of Changes in Water Assets and Water Liabilities for the year ended 30 June 2014 for the urban water system
Water asset increases2014
(ML)		2013
(ML)
Urban water system increases  
Entitled diversion of non-allocated surface water to urban water system37 66
Wastewater collected36,68235,708
Increase of urban claim on surface water71,000 71,000
Total urban water system increases107,719 106,774
   
Water asset decreases  
Urban water system decreases  
Evaporation from urban water system3,930 3,877
Urban water system leakage to groundwater2,0812,803
Delivery to urban water system users45,690 43,949
Discharge from urban water system to surface water32,58831,702
Adjustment and forfeiture of urban claim on surface water22,305 23,162
Other urban water system decreases1,4621,270
Total urban water system decreases108,056106,763
   
Balancing item—urban water system(282)(38)
   
Change in net water assets(55) 49


Table 9  Statement of Water Flows for the year ended 30 June 2014 for the urban water system
Water inflows2014
(ML)		2013
(ML)
Urban water system inflows  
Entitled diversion of non-allocated surface water to urban water system37 66
Wastewater collected36,68235,708
Entitled diversion of allocated surface water to urban water system48,69547,838
Total urban water system inflows85,414 83,612
   
Water outflows  
Urban water system outflows  
Evaporation from urban water system3,9303,877
Urban water system leakage to groundwater2,0812,803
Delivery to urban water system users45,690 43,949
Discharge from urban water system to surface water32,58831,702
Other urban water system decreases1,4621,270
Total urban water system outflows85,75183,601
   
Balancing item—urban water system(282)(38)
   
Opening water storage955906
Change in water storage(55) 49
Closing water storage900 955