❓ Dr. Honey requests updated water yield and licensing data from the Minister for Water, following up on a previous question. The Minister provides data on water licensed to the Water Corporation for public water supply in the Perth and South West regions for 2019-2022.
AnsweredQoN 1107Legislative Assembly
QuestionView source ↗
I refer the Minister to Question on Notice 622 of 2023, and I ask: (a) For parts (a) to (e) of that question, can the Minister provide the total and sustainable water yield information for each resource type given in the previous answer to aforementioned question; and (b) With regard to the volume of licensed water given in the answer to aforementioned question, how much of that licensed water is licensed to the Water Corporation?
AnswerView source ↗
Answered
6 August 2024
Responded by
Minister for Water
Response time
2 days
Answer
a) Total sustainable yields were provided in Question on Notice 622, expressed as “Sum of allocation limits”.
The Department of Water and Environmental Regulation prepares water allocation plans which establish how much water can be sustainably abstracted for consumptive use from a water resource. This is an annual allocation limit.
b) The tables below provide the volume of water licensed to the Water Corporation for public water supply from the Perth and South West region superficial and deep aquifers (groundwater) and surface water for the three years 2019-20, 2020-21 and 2021-22 respectively, consistent with the answer to Question on Notice 622.
2019–20
Region i
Resource Type ii
Volume of water licensed to the Water Corporation (GL) @ June 2020
Perth
Superficial aquifers
42
Perth
Deep aquifers
101
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
2020–21
Region
Resource Type
Volume of water licensed to the Water Corporation (GL) @ June 2021
Perth
Superficial aquifers
42
Perth
Deep aquifers
116
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
2021 –22
Region
Resource Type
Volume of water licensed to the Water Corporation (GL) @ June 2022
Perth
Superficial aquifers
43
Perth
Deep aquifers
115
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
i Perth comprises the following water resource management areas: Canning River, Cockburn, Cockburn/Kwinana Coastal, Dandalup River System, Gnangara, Gwelup, Helena River, Jandakot, Kwinana Peel Coastal, Mirrabooka, Murray, Murray River and Tributaries, Perth, Rockingham, Serpentine, Serpentine River Catchment, South West Coastal (Coastal, Colburra Downs, Falcon, Island Point, Mandurah, Whitehills, Lake Clifton), Stakehill, Swan, Swan Coastal, Swan River and Tributaries, Wanneroo, and Yanchep management areas. South West region comprises the following water resource management areas: Blackwood, Bunbury, Busselton Coast, Busselton–Capel, Capel River, Collie, Donnelly River and Tributaries, Dwellingup, Harvey, Lower Blackwood, Middle Blackwood, Muir–Unicup, Nornalup, Preston Area, Shannon–Gardner, South West Coastal (Myalup, Wellesley, Harvey, Lake Preston, Kemerton), Upper Blackwood, Warren River and Tributaries.
ii ‘Deep aquifers’ includes the following resources: Cattamarra Coal Measures, Leederville, Lesueur Sandstone, Sue Coal Measures Yaragadee, Mullalo, Lower Collie Group, Muja, Stockton. ‘Superficial aquifers’ includes all Superficial, Surficial and Mirrabooka resources. Fractured Rock and saline resources are excluded.
a) Total sustainable yields were provided in Question on Notice 622, expressed as “Sum of allocation limits”.
The Department of Water and Environmental Regulation prepares water allocation plans which establish how much water can be sustainably abstracted for consumptive use from a water resource. This is an annual allocation limit.
b) The tables below provide the volume of water licensed to the Water Corporation for public water supply from the Perth and South West region superficial and deep aquifers (groundwater) and surface water for the three years 2019-20, 2020-21 and 2021-22 respectively, consistent with the answer to Question on Notice 622.
2019–20
Region i
Resource Type ii
Volume of water licensed to the Water Corporation (GL) @ June 2020
Perth
Superficial aquifers
42
Perth
Deep aquifers
101
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
2020–21
Region
Resource Type
Volume of water licensed to the Water Corporation (GL) @ June 2021
Perth
Superficial aquifers
42
Perth
Deep aquifers
116
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
2021 –22
Region
Resource Type
Volume of water licensed to the Water Corporation (GL) @ June 2022
Perth
Superficial aquifers
43
Perth
Deep aquifers
115
Perth
Surface water
212
South West
Superficial aquifers
1
South West
Deep aquifers
12
South West
Surface water
90
i Perth comprises the following water resource management areas: Canning River, Cockburn, Cockburn/Kwinana Coastal, Dandalup River System, Gnangara, Gwelup, Helena River, Jandakot, Kwinana Peel Coastal, Mirrabooka, Murray, Murray River and Tributaries, Perth, Rockingham, Serpentine, Serpentine River Catchment, South West Coastal (Coastal, Colburra Downs, Falcon, Island Point, Mandurah, Whitehills, Lake Clifton), Stakehill, Swan, Swan Coastal, Swan River and Tributaries, Wanneroo, and Yanchep management areas. South West region comprises the following water resource management areas: Blackwood, Bunbury, Busselton Coast, Busselton–Capel, Capel River, Collie, Donnelly River and Tributaries, Dwellingup, Harvey, Lower Blackwood, Middle Blackwood, Muir–Unicup, Nornalup, Preston Area, Shannon–Gardner, South West Coastal (Myalup, Wellesley, Harvey, Lake Preston, Kemerton), Upper Blackwood, Warren River and Tributaries.
ii ‘Deep aquifers’ includes the following resources: Cattamarra Coal Measures, Leederville, Lesueur Sandstone, Sue Coal Measures Yaragadee, Mullalo, Lower Collie Group, Muja, Stockton. ‘Superficial aquifers’ includes all Superficial, Surficial and Mirrabooka resources. Fractured Rock and saline resources are excluded.
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