❓ A parliamentary question addresses the lowering of groundwater levels in the Collie Basin due to mine dewatering and the potential use of this water for the Integrated Water Supply Scheme. The government acknowledges the issue and outlines management strategies.
AnsweredQoN 2874Legislative Assembly
QuestionView source ↗
(i) if so, does this relate to mine dewatering?
(2) What has been the level of lowering of groundwater in the Collie Basin over the last 25 and five years?
(2) What has been the level of lowering of groundwater in the Collie Basin over the last 25 and five years?
AnswerView source ↗
Answered
20 November 2007
Responded by
Minister for Water Resources
Response time
7 days
(1) Yes.
(i) The recent report by the 'Collie-Wellington Basin Water Source Options Steering Committee' (chaired by Mr Ross Kelly), recommended the feasibility of using groundwater generated by mine dewatering as a source of drinking water should be subjected to further investigation.
The Water Corporation is currently investigating the opportunity and viability of using dewatering water from the Collie Coal Basin for the Integrated Water Supply Scheme as a short-term measure.
(2) Mining will excavate well below the water table and significant dewatering has to occur for safe mining. As a result local groundwater levels have been significantly lowered adjacent to coal mines with an overall general lowering of the groundwater in the coal basin. The Department of Water adaptively manages this situation and any impacts through licensing, monitoring, modelling and remediation.
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(i) The recent report by the 'Collie-Wellington Basin Water Source Options Steering Committee' (chaired by Mr Ross Kelly), recommended the feasibility of using groundwater generated by mine dewatering as a source of drinking water should be subjected to further investigation.
The Water Corporation is currently investigating the opportunity and viability of using dewatering water from the Collie Coal Basin for the Integrated Water Supply Scheme as a short-term measure.
(2) Mining will excavate well below the water table and significant dewatering has to occur for safe mining. As a result local groundwater levels have been significantly lowered adjacent to coal mines with an overall general lowering of the groundwater in the coal basin. The Department of Water adaptively manages this situation and any impacts through licensing, monitoring, modelling and remediation.
Notice: This document is created or edited using unregistered or evaluation copy of rtLib valid for testing or development purposes only. To use it for productive or any other purposes please register it. You may purchase the license on
http://www.rtlib.com
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