Central Brisbane Water Supply Scheme (WSS)


Announced Allocations

The Central Brisbane River Water Supply Scheme is running with the following announced allocations:
  
AA High
Last updated 1 July 2010
100%
AA Medium
Last updated 1 July 2010
100%

Parameters used in Calculating Announced Allocations

Formula for AA High
  • 100% when the combined percentage of useable volume in storage of Wivenhoe and Somerset dams is greater than or equal to 25%
  • When the combined percentage of useable volume in storage of Wivenhoe and Somerset dams is less than 25% the AA High must be calculated using the following formula as set out in s78 of the Moreton Resource Operations Plan:
 
AAHPA = ((UV-(AAMPxMPA)+DIVHPA+DIVMP)/HPAA) x 100
   
Parameters for AA High calculation
The following parameters were used in calculating the current AA High:
 
UV (Useable Volume) 1,225,337 ML
AAMP (Medium Priority Announced Allocations) 100 %
MPA (Medium Priority Water Allocations) 7,041 ML
DIVHPA (High Priority Diversion) 0
DIVMP (Medium Priority Diversions) 0
HPAA (High Priority A Water Allocations) 279,000 ML
 
Formula for AA Medium
  • As per column 2 of the following table corresponding to the combined percentage of useable volume in storage of Wivenhoe and Somerset dams in column 1.
 
Combined Percentage of Useable Volume in Storage of Wivenhoe and Somerset Dams
(CPUVS)
Announced Allocation for Medium Priority Water Allocations (AAMP)
(% of nominal volume)
0%-14.9% 0%
15%-24.9% 15%
25%-29.9% 25%
30%-34.9% 40%
35%-39.9% 55%
40%-44.9% 70%
45%-49.9% 85%
50%-100% 100%
 
  • The combined percentage of useable volume in storage of Wivenhoe and Somerset dams must be calculated using the following formula as set out in s77 of the Moreton Resource Operations Plan:
 
CPUVS = ((UVWivenhoe + UVSomerset)/CUFSV) x 100
 
Parameters for AA Medium calculation
The following parameters were used in calculating the current AA High:
 
UVWivenhoe (Useable Volume) Insert value
UVSomerset (Useable Volume) Insert value
CUFSV (Combined Useable Full Supply Volume) Insert value
 
Please refer to the Moreton Resource Operations Plan for further details regarding Medium Priority Announced Allocations in the Central Brisbane River Water Supply Scheme.
 
Central Brisbane River Scheme Region