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首页> 外文期刊>Journal of Hydrology >The hydrological and economic impacts of changing water allocations in political regions within the peri-urban South Creek catchment in Western Sydney II: Scenarios
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The hydrological and economic impacts of changing water allocations in political regions within the peri-urban South Creek catchment in Western Sydney II: Scenarios

机译：西悉尼南郊南溪流域内政治区域水分配变化对水文和经济的影响II：情景

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摘要

The aim in this paper is to assess the hydrological and economic impacts of deploying water in the political jurisdictions of the peri-urban South Creek catchment of Western Sydney. This catchment has been identified as the region in which the city of Sydney will grow into in the future, with a plan to move an extra one million people into the catchment in the next 25-30. years. In conjunction with this expansion, a plan exists to augment the existing water supply by treating waste water effluent, harvesting stormwater and improving irrigation efficiency, along with a strategy for saving water on farms. Water in this catchment is operated by and in the interests of society, where decisions on its allocation have a political perspective to them. However, the growth within this catchment and the water augmentation strategies are not split evenly amongst the political entities within this catchment, namely the Local Government Authorities. An integrated hydro-economic model segregated according to the political entities in the catchment is used in this study to address a range of water saving scenarios raised by stakeholders. The trade-offs inherent in all water allocation decisions on a regional basis are made transparent in this model and its political ramifications, defined as the impacts on different political regions, are identified. In analysing the measures designed to save water across the catchment, none resulted in a positive Net Present Value. Even just expanding the system to accommodate one million extra people resulted in significant economic losses. In addition, the impact of each measure in each political region was markedly different. The purpose of this study is to provide stakeholders in individual local government regions with evidence of the costs and impacts of rational decisions to change the management of water resources in South Creek catchment.
机译：本文的目的是评估在西悉尼郊区南溪集水区的政治管辖区内调水的水文和经济影响。该流域已被确定为悉尼市未来的发展区域，并计划在未来25-30年内将另外100万人移入该流域。年份。与此扩展相结合的是，存在一项通过处理废水，收集雨水和提高灌溉效率来增加现有供水量的计划，以及一项为农场节水的战略。该流域中的水由社会运作并符合社会的利益，在社会上对其分配的决定对他们具有政治观点。但是，该流域内的增长和增水策略在该流域内的政治实体（即地方政府当局）之间分配不均。本研究使用根据流域中政治实体隔离的综合水力经济模型来解决利益相关者提出的一系列节水方案。在该模型中，使所有水资源分配决策的内在取舍在该模型中变得透明，并确定了其政治影响（定义为对不同政治区域的影响）。在分析旨在节约集水量的措施时，没有一项措施带来正的净现值。即使只是扩展系统以容纳一百万额外的人，也造成了巨大的经济损失。此外，每项措施对每个政治地区的影响都明显不同。这项研究的目的是为各个地方政府地区的利益相关者提供证据，以证明改变南溪流域水资源管理的合理决策的成本和影响。

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