NSW Water Theme - Hydro Line

Export Data Access APINSW Water Theme -\nHydro LinePlease NoteWGS 84 service aligned to GDA94This\n dataset has spatial reference [WGS 84 ≈ GDA94] which may result in \nmisalignments when viewed in GDA2020 environments. A similar service \nwith a ‘multiCRS’ suffix is available which can support GDA2020, GDA94 \nand WGS 84 ≈ GDA2020 environments.In due course, and allowing time \nfor user feedback and testing, it is intended that the original service \nname will adopt the new 'multiCRS' functionality.Metadata Portal Metadata InformationContent TitleNSW Water Theme - Hydro LineContent TypeHosted Feature LayerDescriptionNSW Hydro Line defines the centreline of a water course. It includes features such as natural water course, canal-drain, race, spill way and tunnel-siphen. It includes key attributes such as hydro line name, perennially and flow direction.Features within the Hydro Line class include:Watercourse Natural Watercourse - A naturally formed watercourse. This line feature dataset is part of the Topographic database.Canal-Drain - An artificial (built) watercourse to convey water and/or to allow transportation upon. This line feature dataset is part of the Topographic database.Watercourse Centre LineSpillway - A constructed path or channel for excess water to pass over or beside a dam. This line feature dataset is part of the Topographic database.Tunnel-Siphen - An underground watercourse conveying water that has direct association with the hydrographic network. Also included are siphens which is a man-made or natural conduit in the form of an inverted U shape and filled until gravitational force or atmospheric pressure is sufficient to force water in one end of the pipe and out the other end thus conducting water beneath a depressed place.ConnectorConnector - A line used maintain continuity of a watercourse where that watercourse is not physically evident. This line feature dataset is part of the digital Topographic database.Water security is one of Australia’s major challenges. Key users of the hydrology data are NSW State and Local Government agencies as well as Federal Government agencies. These bodies use this data to better manage State and Local Government assets.This hydrology data provides the NSW component of the Australian Hydrological Geospatial Fabric which is a critical input to the Australian Water Resources Information System.More widespread use of the hydrology data is also found in emergency management response and recovery efforts, hazard mitigation or disaster risk reduction, climate change, natural resource assessment, environmental planning and monitoring, insurance, mining and agriculture.Spatial Services continuously updates this theme with information sourced from relevant stakeholders and custodians; by data verification from other internal and external databases; research and through Spatial Services’ regular cycle of updating from aerial imagery and elevation data.Initial Publication Date06/02/2020Data Currency01/01/3000Data Update FrequencyOtherContent SourceData provider filesFile TypeESRI File Geodatabase (*.gdb)Attribution©\n State of New South Wales (Spatial Services, a business unit of the \nDepartment of Customer Service NSW). For current information go to spatial.nsw.gov.auData Theme, Classification or Relationship to other DatasetsNSW Water Theme of the Foundation Spatial Data Framework (FSDF)AccuracyThis\n dataset was captured by utilising the best available source at a \nvariety of scales and accuracies, ranging from 1:500 to 1:250 000 \naccording to the National Mapping Council of Australia, Standards of Map\n Accuracy (1975). Therefore, the position of the feature instance will \nbe within 0.5mm at map scale for 90% of the well-defined points. That \nis, 1:500 = 0.25m, 1:2000 = 1m, 1:4000 = 2m, 1:25000 = 12.5m, 1:50000 = \n25m and 1:100000 = 50m. A program to upgrade the spatial location and \naccuracy of data is ongoing.Spatial Reference System (dataset)GDA94Spatial Reference System (web service)EPSG:3857WGS84 Equivalent ToGDA94Spatial ExtentFull StateContent LineageFor additional information, please contact us via the Spatial Services Customer HubData ClassificationUnclassifiedData Access PolicyOpenData QualityFor additional information, please contact us via the Spatial Services Customer HubTerms and ConditionsCreative CommonsStandard and SpecificationOpen\n Geospatial Consortium (OGC) implemented and compatible for consumption \nby common GIS platforms. Available as either cache or non-cache, \ndepending on client use or requirement.  Data CustodianDCS Spatial Services346 Panorama AveBathurst NSW 2795Point of ContactPlease contact us via the Spatial Services Customer HubData AggregatorDCS Spatial Services346 Panorama AveBathurst NSW 2795Data DistributorDCS Spatial Services346 Panorama AveBathurst NSW 2795Additional Supporting InformationData DictionariesTRIM Number

导出数据访问：APIN 新南威尔士州（NSW）水主题——水文线要素

【注意事项】本WGS 84（World Geodetic System 1984，世界大地测量系统1984）服务适配GDA94（Geocentric Datum of Australia 1994，澳大利亚大地基准1994）。本数据集的空间参考为[WGS 84 ≈ GDA94]，在GDA2020（Geocentric Datum of Australia 2020，澳大利亚大地基准2020）环境中查看时可能出现坐标偏移。另有带“multiCRS（多坐标参考系）”后缀的同类服务，可支持GDA2020、GDA94及WGS 84 ≈ GDA2020环境。待收集用户反馈并完成测试验证后，原服务将升级为具备multiCRS功能的新版本。

### 元数据门户元数据信息
**内容标题**：新南威尔士州水主题——水文线要素
**内容类型**：托管要素图层（Hosted Feature Layer）
**数据集描述**：新南威尔士州水文线要素定义了水道的中心线，涵盖天然水道、渠涵、渡槽、溢洪道及隧道-虹吸管道等要素，包含水文线名称、常年性、流向等核心属性。

#### 水文线要素类包含以下子类：
1. **天然水道**：自然形成的水道。本线要素数据集属于地形数据库范畴。
2. **渠涵**：用于输水或通航的人工建造水道。本线要素数据集属于地形数据库范畴。
3. **水道中心线**：水道的中线标识。
4. **溢洪道**：用于排放水库多余洪水的人工通道或渠槽。本线要素数据集属于地形数据库范畴。
5. **隧道-虹吸管道**：与水文网络直接关联的地下输水水道。其中虹吸管道指人工或天然形成的倒U形输水通道，当管内充满水体后，依靠重力或大气压力实现水体在管内的单向流动，从而实现低洼区域的跨渠输水。
6. **连接要素**：用于衔接物理上不连续的水道的线要素。本线要素数据集属于数字地形数据库范畴。

水资源安全是澳大利亚面临的核心挑战之一。本水文数据的核心用户为新南威尔士州、地方政府机构及联邦政府机构，上述主体依托该数据优化州级与地方政府资产管理。本水文数据构成了澳大利亚水文地理格网（Australian Hydrological Geospatial Fabric）的新南威尔士州部分，而该格网是澳大利亚水资源信息系统（Australian Water Resources Information System）的关键输入数据源。此外，该水文数据还广泛应用于应急响应与灾后恢复、灾害减灾与风险降低、气候变化应对、自然资源评估、环境规划与监测、保险、矿业及农业等领域。

空间服务部门（Spatial Services）通过以下方式持续更新该主题数据集：采集相关利益方与数据保管方提供的信息、通过内部及外部数据库开展数据核验、开展相关研究，以及依托航空影像与高程数据开展定期更新工作。

**首次发布日期**：2020年2月6日
**数据现势性**：3000年1月1日
**数据更新频率**：其他
**数据来源**：数据提供方文件
**文件格式**：ESRI文件地理数据库（ESRI File Geodatabase, *.gdb）
**版权声明**：© 新南威尔士州政府（空间服务部门，新南威尔士州顾客服务部下属业务单元）。最新信息请访问 spatial.nsw.gov.au。
**数据主题、分类及与其他数据集的关联关系**：属于基础空间数据框架（Foundation Spatial Data Framework, FSDF）下的新南威尔士州水主题数据集。
**精度说明**：本数据集采用澳大利亚国家测绘委员会1975年《地图精度标准》中规定的多比例尺与多精度数据源采集，比例尺覆盖1:500至1:250000。据此，90%的明确要素点位在对应比例尺下的图上偏差不超过0.5mm，即1:500比例尺对应实地偏差0.25米、1:2000比例尺对应1米、1:4000比例尺对应2米、1:25000比例尺对应12.5米、1:50000比例尺对应25米、1:100000比例尺对应50米。目前本数据集的空间位置与精度升级工作正在持续推进中。
**数据集空间参考系统**：GDA94（Geocentric Datum of Australia 1994）
**Web服务空间参考系统**：EPSG:3857
**WGS84等效基准**：GDA94
**空间范围**：全州范围
**数据溯源**：如需更多信息，请通过空间服务部门客户中心联系我们。
**数据分类**：非机密
**数据访问政策**：开放获取
**数据质量**：如需更多信息，请通过空间服务部门客户中心联系我们。
**使用条款**：知识共享（Creative Commons）标准协议
**标准与规范**：符合开放地理空间联盟（Open Geospatial Consortium, OGC）标准，可兼容主流GIS平台读取。可根据客户端需求提供缓存或非缓存服务。
**数据保管方**：DCS空间服务部门，地址：346 Panorama Avenue, Bathurst NSW 2795
**联络方式**：请通过空间服务部门客户中心联系我们。
**数据整合方**：DCS空间服务部门，地址：346 Panorama Avenue, Bathurst NSW 2795
**数据分发方**：DCS空间服务部门，地址：346 Panorama Avenue, Bathurst NSW 2795
**附加支持信息**：数据字典、TRIM编号。