❓ A WA parliamentary question on notice regarding Perth's water consumption, sources, dam capacities, groundwater extraction, and sprinkler restrictions. The Minister provides data and explanations, including plans to increase groundwater abstraction.
AnsweredQoN 891Legislative Council
QuestionView source ↗
WATER CONSUMPTION
(1) What was the total water consumption in the Perth metropolitan area for last year - 2000? (2) How much of this consumption came from - (a) dams; (b) ground water? (3) What is the capacity of each of the dams that provides water to the Perth metropolitan area? (4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS
(1) What was the total water consumption in the Perth metropolitan area for last year - 2000? (2) How much of this consumption came from - (a) dams; (b) ground water? (3) What is the capacity of each of the dams that provides water to the Perth metropolitan area? (4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS
AnswerView source ↗
I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(2) How much of this consumption came from - (a) dams; (b) ground water? (3) What is the capacity of each of the dams that provides water to the Perth metropolitan area? (4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(b) ground water?
(4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(2) How much of this consumption came from - (a) dams; (b) ground water? (3) What is the capacity of each of the dams that provides water to the Perth metropolitan area? (4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(b) ground water?
(4) What is the current quantity of water in each of the dams referred to in question (3)? (5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(5) Why has the Water Corporation installed the infrastructure that enables it to extract 240 gigalitres of ground water per annum when its licence allows only 146.5 gigalitres to be extracted? (6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(6) Does the Water Corporation expect to save 45 gigalitres as a result of its current sprinkler restrictions? (7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(7) If so, why does the Water Corporation not apply for an additional 45 gigalitres of ground water, and thereby avoid the need for restrictions, bearing in mind that the replenishment rate of Perth underground water supplies is 600 gigalitres per annum, which is approximately twice the total consumption of the Perth metropolitan area? Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
Hon N.D. GRIFFITHS replied: I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
I thank the member for some notice of these questions. (1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(1) Total water consumption in the Perth metropolitan area was 260.3 gigalitres from 1 July 2000 to 30 June 2001. (2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(2) (a) 119.5 gigalitres; (b) 140.8 gigalitres. (3) Capacity in gigalitres: South Dandalup Dam 205.3; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 76.3; Serpentine Dam 193.7; Serpentine Pipehead Dam 2.6; Wungong Dam 59.8; Canning Dam 90.4; Churchman Dam 2.2; Victoria Dam 9.5; Mundaring Weir 63.6. (4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(4) Storage as at 11 December 2001 in gigalitres: South Dandalup Dam 26; Conjurunup Pipehead Dam 0.2; North Dandalup Dam 18.2; Serpentine Dam 33.8; Serpentine Pipehead Dam 2.2; Wungong Dam 30.9; Canning Dam 29.1; Churchman Dam 0.6; Victoria Dam 3.9; Mundaring Weir 24.8. (5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(5) The capacity is installed to meet peak demand during hot summer days. (6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(6) Yes. (7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
(7) The Water Corporation has examined opportunities with the Water and Rivers Commission for increasing ground water allocation and will increase abstraction to 158 gigalitres in 2001-02.
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