Water Supply Management Areas Overlay

The purpose of water supply management areas is to provide for the ongoing operation, maintenance, upgrading and development of the municipal water supply infrastructure. The areas comprise the catchments that are mainly in public ownership surrounding municipal water supply infrastructure. This infrastructure includes five dams in the Waitakere Ranges, two reservoirs in the Hunua Ranges, the Hays Creek dam at Papakura and land owned by Watercare Services in the Riverhead Forest. The management area also includes all related supporting and connected water supply infrastructure, such as the pipe network and pumping stations, located within these catchments. They contain water supply networks that are classified by this Unitary Plan as significant infrastructure. Part of the water supply management area for the Hunua water supply infrastructure is now outside the Auckland region. Water supply management areas, particularly those in the Waitakere and Hunua Ranges, contain a mix of vegetation cover. Large areas of significant indigenous vegetation meet the criteria for identification as natural stream management areas. The Waitakere water supply management area forms part of the wider Waitakere Ranges heritage area. One of the heritage features recognised by the Waitakere Ranges Heritage Area Act 2008 is the operation, maintenance and development of the public water catchment and supply system that services the needs of the people of Auckland.供水管理片区的设立目的，在于保障市政供水基础设施的持续运营、维护、升级与开发。该类片区涵盖市政供水基础设施周边主要为公共所有的集水区。此类基础设施包括怀塔克雷山脉（Waitakere Ranges）内的5座水坝、胡努阿山脉（Hunua Ranges）内的2座水库、帕帕库拉的海斯溪水坝，以及里弗黑德森林内水务服务公司（Watercare Services）所持有的土地。该管理片区还涵盖上述集水区内所有相关配套与连通的供水基础设施，例如管网与泵站。片区内的供水管网已被本统一规划（Unitary Plan）认定为重要基础设施。胡努阿供水基础设施对应的供水管理片区，有部分区域现已位于奥克兰大区之外。供水管理片区，尤其是怀塔克雷山脉与胡努阿山脉内的片区，植被覆盖类型多样。大片具有重要价值的本土植被，符合自然溪流管理片区的认定标准。怀塔克雷供水管理片区是更大范围的怀塔克雷山脉遗产区的组成部分。《2008年怀塔克雷山脉遗产区法案》（Waitakere Ranges Heritage Area Act 2008）所认定的遗产特征之一，便是服务奥克兰市民用水需求的公共集水与供水系统的运营、维护与开发。