A WA parliamentary question on notice from 2006 regarding Perth's water resources, dam storage levels, water restrictions, and water banking strategies in light of declining rainfall and growing population.

AnsweredQoN 738Legislative Council
Asked
14 September 2006
Portfolio
Water Resources

QuestionView source ↗

WATER RESOURCES - DAM STORAGE
I refer to the significant drop of rainfall in our region and, as a consequence, the alarming 60 per cent fall in stream flow over the past 30 years, the current scramble to develop new water resources, such as desalination plants and the south west Yarragadee, and our growing population and industry. (1) How much potable water is stored in the dams supplying Perth and the integrated water supply system expressed in - (a) gigalitres; and (b) as a percentage of total water storage capacity? (2) Why has the government chosen not to impose tighter water restrictions on industry, agriculture users and households, and what criteria are used to reach that decision? (3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE

AnswerView source ↗

That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(1) How much potable water is stored in the dams supplying Perth and the integrated water supply system expressed in - (a) gigalitres; and (b) as a percentage of total water storage capacity? (2) Why has the government chosen not to impose tighter water restrictions on industry, agriculture users and households, and what criteria are used to reach that decision? (3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(a) gigalitres; and (b) as a percentage of total water storage capacity? (2) Why has the government chosen not to impose tighter water restrictions on industry, agriculture users and households, and what criteria are used to reach that decision? (3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(b) as a percentage of total water storage capacity? (2) Why has the government chosen not to impose tighter water restrictions on industry, agriculture users and households, and what criteria are used to reach that decision? (3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(2) Why has the government chosen not to impose tighter water restrictions on industry, agriculture users and households, and what criteria are used to reach that decision? (3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(3) Will the government implement a strategy of water banking in our dams as a precaution against ongoing dry years? (4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(4) If no to (3), why not? My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
My question to the Leader of the House is that if the farm dams were one-third full at the end of winter, what would be his advice to farmers? Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
Hon KIM CHANCE replied: That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
That is a clever trick. I thank Hon Paul Llewellyn for both his question on notice and question without notice, which I am happy to take. (1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(1) (a) At 9.00 am today, 14 September 2006, the water stored in dams that supply Perth and the integrated water supply scheme was 215 gigalitres. (b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(b) this is 32 per cent of total storage capacity. (2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(2) The availability of water from ground water reserves, dam storage and the new desalination plant is sufficient to avoid the need for tighter water restrictions. (3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(3) Yes. The ground water sources and surface dams are used conjunctively to provide the most secure water supply system. The operation strategy for the various sources seeks to balance the retention of water in dams for future use against the availability of ground water. (4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
(4) Not applicable. In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
In answer to the question without notice, that would depend on whether I had the capacity to access underground water or other water supplies. The fundamental advice I would give to farmers is that they should ensure that their future demand needs are matched to their likely supply needs. The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.
The PRESIDENT : Before I give the call to Hon Murray Criddle, I note that Hon Paul Llewellyn has managed to ask two questions in a row. Hon Paul Llewellyn is not the Leader of the Opposition.

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