National Water Account 2015

Ord: Future outlook

Lake Argyle Dam, Western Australia (iStock © czardases)

Future prospects

This section looks forward 12 months and considers what water assets, claims, and commitments might affect the region's water resources.

Table N23 shows that there is a surplus of available water assets over water liabilities and future commitments that are expected to be settled within 12 months of the reporting date.

 

Table N23 Future prospects for the Ord region
 Volume
ML
Total water assets as at 30 June 20159,942,970
less water assets not available to be accessed, taken, or delivered: 
dead storage(411,175)
less total water liabilities as at 30 June 2015(393,301)
Subtotal9,138,494
less future commitments expected to be settled within 12 months of the reporting date 
expected diversion of surface water(270,000)
expected extraction of groundwater(12,000)
Surplus/deficit of available water assets over water liabilities and future commitments expected to be settled within 12 months of the reporting date8,856,494
add expected net inflows within 12 months of the reporting date 
net precipitation/storage inflow750,000
Surplus/deficit of available water assets and expected future inflows over water liabilities and future commitments expected to be settled within 12 months of the reporting date9,606,494

 

 

The expected diversions, extractions, and releases of water are based on abstractions made during the 2014–15 year; however, it is estimated that the volume of surface water diverted for irrigation may increase next year for water supply to the Goomig Farmlands (see Major water reforms).

According to the Bureau's Climate outlook, it is expected to be a relatively dry wet season across the region, similar to the 2014–15 year; however, expected net inflows into the surface water storages over the next 12 months will still be in surplus. Assuming similar climate conditions to this year, expected precipitation (approximately 550,000 ML) and river inflows into the storages (approximately 2,700,000 ML) should marginally exceed the expected evaporation from the storages (approximately 2,500,000 ML). 

 

Contingent water assets and contingent water liabilities

Contingent water assets

The Department of Water sets extraction limits on groundwater aquifers to protect groundwater-dependent ecosystems. Only water above the prescribed minimum water-table level is recognised as a water asset in the account. The volume of water that is beyond this extraction limit is considered a contingent water asset for aquifers in the region; however, similar to the recognition of groundwater assets, there is currently not enough information available regarding groundwater resources in the Ord region to allow for a volumetric estimate.

 

Contingent water liabilities

There are no contingent water liabilities in the Ord region.