14.1 Adjustment and forfeiture of groundwater allocation

Supporting information

The volume presented in the water accounting statements (26,167 ML) represents the volume of groundwater allocation that was forfeited for groundwater entitlements in the Melbourne region during the 2012–13 year. Carry-over rules for groundwater entitlements throughout the Melbourne region do not allow unused water to be carried over at the end of the year; therefore, the volume of groundwater forfeited is equal to the volume of unused allocated water.

The volume reported does not include urban adjustment/forfeitures of groundwater allocations for licensed entitlements.

Quantification approach

Data source

Bureau of Meteorology (the Bureau).

Provided by

The Bureau.


The volume of water forfeited at the end of the 2012–13 year was calculated by subtracting the volume of groundwater extracted from the volume of water groundwater available for extraction. This calculation is summarised in the following table. 

Calculation of forfeiture on the groundwater liability in the Melbourne region for the 2012–13 year
Account Volume (ML)
22.1 Groundwater allocation announcements 41,579
18.11 Entitled extraction of allocated groundwater to users (15,412)
Forfeiture on 30 June 2013

Assumptions, limitations, caveats and approximations


Uncertainty information

The uncertainty estimate was not quantified.