Sydney
19.14 Adjustment and forfeiture of urban inter-region claim on water

The volume reported in this line item of 1,182 ML represents the total liability decrease on the Fish River Water Supply Scheme by Lithgow City Council.

Lithgow City Council databases.

Lithgow City Council.

Total adjustment and forfeiture on the urban inter-region claim for the Fish River Water Supply Scheme is calculated by summing the total carry-over and entitlement for the 2012–13 year, and subtracting any diversions made during that year and any carry-over into the 2013–14 year.

The Lithgow City Council has an annual maximum allocation entitlement on the Fish River Water Supply Scheme to supply water to its storages. This entitlement is subject to a number of operating rules and restrictions depending on levels in the supply storages (Oberon Dam and Duckmaloi Weir).

The carry-over volume available at the beginning of a year from the Fish River Water Supply Scheme is calculated from entitlement holder's allocation and metered supply volume for the previous two years (carry-over volume is a two-year rolling average computed every six months; the carry-over volume is capped at 50% of the maximum annual quantity).

Total forfeiture is calculated as shown in the following table.

Total decrease of urban inter-region claim on surface water during the 2012–13 year

		Volume (ML)
	3.4 Urban inter-region claim on water  (as at 30 June 2012)	356
add	11.15 Increase of urban inter-region claim on water by urban water system	1,778
less	11.9 Delivery of water to urban water system under inter-region agreement	596
less	Closing balance 3.4 Urban inter-region claim on water (as at 30 June 2013)	1,182
	Total decrease on claim (as at 30 June 2013)	356

Nil.

Diversions are based on measured data. Estimated uncertainty based on meter accuracy is +/– 2%.

The volume stated in this line item for the 2012 Account was previously included in line item 17.17 Decrease of inter-region claim on water. As Lithgow City Council is now considered to be a part of the urban water store, the adjustment and forfeiture for Lithgow City Council's entitlement on the Fish River Water Supply Scheme is now included in this line item. The volume for the 2012 Account has been restated as 1,441 ML.