A WA parliamentary question seeks detailed information on the South West Yarragadee aquifer, including recharge rates, water usage, ecological impacts, research costs, and timelines for potential metropolitan consumption, reflecting concerns about water resource management and future planning.

AnsweredQoN 35Legislative Assembly
Asked
28 April 2005
Portfolio
Water Resources

QuestionView source ↗

(b) the annual recharge rate of the South West Yarragadee aquifer formation; (c) the annual volume of water discharged into the Blackwood River from aquifers in the South West; (d) the current quantity of water drawn from the South West Yarragadee on an annual basis; (e) the current quantity of water allocated from the South West Yarragadee and for what purpose these allocations have been made; (f) the current quantity of annual water consumption in the South West region; (g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(c) the annual volume of water discharged into the Blackwood River from aquifers in the South West; (d) the current quantity of water drawn from the South West Yarragadee on an annual basis; (e) the current quantity of water allocated from the South West Yarragadee and for what purpose these allocations have been made; (f) the current quantity of annual water consumption in the South West region; (g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(d) the current quantity of water drawn from the South West Yarragadee on an annual basis; (e) the current quantity of water allocated from the South West Yarragadee and for what purpose these allocations have been made; (f) the current quantity of annual water consumption in the South West region; (g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(e) the current quantity of water allocated from the South West Yarragadee and for what purpose these allocations have been made; (f) the current quantity of annual water consumption in the South West region; (g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(f) the current quantity of annual water consumption in the South West region; (g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(g) a breakdown of the estimated future quantity of annual water consumption in the South West region; (h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(h) a breakdown of the predicted future quantity of water to be drawn from the South West Yarragadee formation; (i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(i) the impact on the ecology (including but not limited to the impact on wetlands, river systems and animal life) of exporting water from the South West Yarragadee aquifer formation; (j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(j) the current, and estimated future cost of research into the South West Yarragadee aquifer formation; and (k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
(k) the estimated date that a decision will be made regarding the sourcing of water from the South West Yarragadee for metropolitan consumption?
The actual effective porosity could be as much as 20% and therefore the volume doubled. (b) The annual recharge rate is dependent on factors such as rainfall, land use change and the amount of pumping that occurs. Estimates of recharge to the Yarragadee aquifer are comprised ofinclude recharge directly entering the aquifer in areas where it is exposed to the surface and leakage from overlying aquifers in other areas. Total recharge to the South West Yarragadee has been estimated in various studies to be between 300 and 400 GL/yr. (c) The annual volume of groundwater discharged into the Blackwood River from the South West Yarragadee aquifer is approximately 10-20 GL/year. In addition, there is approximately the same volume that discharges into the river from the Leederville aquifer. (d) The quantity of groundwater drawn from the South West Yarragadee aquifer on an annual basis is estimated at about 36 GL. (e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1. (f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004). (g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(b) The annual recharge rate is dependent on factors such as rainfall, land use change and the amount of pumping that occurs. Estimates of recharge to the Yarragadee aquifer are comprised ofinclude recharge directly entering the aquifer in areas where it is exposed to the surface and leakage from overlying aquifers in other areas. Total recharge to the South West Yarragadee has been estimated in various studies to be between 300 and 400 GL/yr. (c) The annual volume of groundwater discharged into the Blackwood River from the South West Yarragadee aquifer is approximately 10-20 GL/year. In addition, there is approximately the same volume that discharges into the river from the Leederville aquifer. (d) The quantity of groundwater drawn from the South West Yarragadee aquifer on an annual basis is estimated at about 36 GL. (e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1. (f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004). (g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(c) The annual volume of groundwater discharged into the Blackwood River from the South West Yarragadee aquifer is approximately 10-20 GL/year. In addition, there is approximately the same volume that discharges into the river from the Leederville aquifer. (d) The quantity of groundwater drawn from the South West Yarragadee aquifer on an annual basis is estimated at about 36 GL. (e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1. (f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004). (g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(d) The quantity of groundwater drawn from the South West Yarragadee aquifer on an annual basis is estimated at about 36 GL. (e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1. (f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004). (g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1. (f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004). (g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2. (h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2. (i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken. Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future. (j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes. (k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(k) The current expectation is that a decision will be made in early 2006. (e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(e) Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Table 1 Licensed entitlements in the SW Yarragadee aquifer Purpose Quantity (GL/yr) Agriculture 25.528 Commercial 0.998 Domestic 0.607 Future town water supply 8.542 Industrial 4.916 Local Government 1.713 Mining 15.186 Public Town Water Supply 29.570 Unaccounted 0.262 TOTAL 87.322 (g) Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Table 2 Forecast increase in water use scenarios (GL/yr) by 2030 Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Water Sector Increase in water use (GL/yr) National LWRA (1999) Industry base case Industry expansion scenario Town Water 19 19 Industry 8.3 23.3* Other urban use 46 9.6 9.6 Horticulture 23 23 Dairy/pasture 30 30 Viticulture 50 17 17 Mining 12 0 0 Other uses 0.6 0.6 TOTAL 108 107.5 122.5 *includes 15GL/yr for the Kemerton Industrial Park Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr. (h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
(h) Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2. Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7
Water Sector Groundwater resource Estimated Consumption (GL/yr) Dairy Yarragadee 30 Horticulture Yarragadee 23 Viticulture Yarragadee 3.3 Industrial Yarragadee 4 Town water supply Yarragadee 25.4 TOTAL 85.7

AnswerView source ↗

Answered
21 June 2005
Responded by
Minister for Water Resources
Response time
54 days
(a) The estimated volume of water stored in both onshore and offshore parts of the South West Yarragadee aquifer is 600 000 GL.
The actual effective porosity could be as much as 20% and therefore the volume doubled.
(b) The annual recharge rate is dependent on factors such as rainfall, land use change and the amount of pumping that occurs. Estimates of recharge to the Yarragadee aquifer are comprised ofinclude recharge directly entering the aquifer in areas where it is exposed to the surface and leakage from overlying aquifers in other areas. Total recharge to the South West Yarragadee has been estimated in various studies to be between 300 and 400 GL/yr.
(c) The annual volume of groundwater discharged into the Blackwood River from the South West Yarragadee aquifer is approximately 10-20 GL/year. In addition, there is approximately the same volume that discharges into the river from the Leederville aquifer.
(d) The quantity of groundwater drawn from the South West Yarragadee aquifer on an annual basis is estimated at about 36 GL.
(e) The following information is provided by the Department of Environment's (DoE) Water Resource Licensing database and is current to 29 April 2005. Please see Attachment 1.
(f) The quantity of annual groundwater consumption in the South West region from all aquifers is estimated at about 72 GL (as of September 2004).
(g) The breakdown of estimated annual water consumption in the south west region can be determined from the work completed within the South West Yarragadee project and the National Land & Water Resources Audit (2000). See Attachment 2.
(h) Given the current use from the South West Yarragadee formation of 36 GL/yr, the predicted future quantity of groundwater to be drawn from the South West Yarragadee formation is estimated to be approximately 122 GL by 2030. See Attachment 2.
(i) The ecological impact of taking water from the South West Yarragadee aquifer is still under investigation and will depend on the total amount of additional water taken by all users, the location from which the water is taken and the rate at which it is taken.
Any decisions to take water from the South West Yarragadee aim to ensure that natural ecological processes and the biodiversity of water dependent ecosystems are maintained. Environmental allocations need to be balanced with the sustainable use of water resources to meet the economic and social needs of others who want to use the water now and into the future.
(j) The total cost of existing research into the South West Yarragadee is approximately $12.5 million. An additional $1.8m has been budgeted for ongoing investigation in 2005/06. The final costs of future research will depend on specific information needs identified through the ongoing evaluation and assessment processes.
(k) The current expectation is that a decision will be made in early 2006.
(e)
Table 1 Licensed entitlements in the SW Yarragadee aquifer
Purpose
Quantity (GL/yr)
Agriculture
25.528
Commercial
0.998
Domestic
0.607
Future town water supply
8.542
Industrial
4.916
Local Government
1.713
Mining
15.186
Public Town Water Supply
29.570
Unaccounted
0.262
TOTAL
87.322
(g)
Table 2 Forecast increase in water use scenarios (GL/yr) by 2030
Water Sector
Increase in water use (GL/yr)
National LWRA (1999)
Industry base case
Industry expansion scenario
Town Water
19
19
Industry
8.3
23.3*
Other urban use
46
9.6
9.6
Horticulture
23
23
Dairy/pasture
30
30
Viticulture
50
17
17
Mining
12
0
0
Other uses
0.6
0.6
TOTAL
108
107.5
122.5
*includes 15GL/yr for the Kemerton Industrial Park
Given that the current use from all aquifers in the south west region is 72 GL/yr, the estimated future quantity of annual water consumption will be between 179.5 and 194.5 GL/yr.
(h)
Table 3 Breakdown of estimated consumption from groundwater in the south west region by 2030 (excluding potential transfer to Perth). See Attachment 2.
Water Sector
Groundwater resource
Estimated Consumption (GL/yr)
Dairy
Yarragadee
30
Horticulture
Yarragadee
23
Viticulture
Yarragadee
3.3
Industrial
Yarragadee
4
Town water supply
Yarragadee
25.4
TOTAL
85.7

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