Geofabric Surface Cartography - V2.1.1

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\n\n\nThe Geofabric Surface Cartography product provides a set of related feature classes to be used as the basis for the production of consistent hydrological cartographic maps. This product contains a geometric representation of the (major) surface water features of Australia (excluding external territories). Primarily, these are natural surface hydrology features but the product also contains some man-made features (notably reservoirs, canals and other hydrographic features). \n\nThe product is fully topologically correct which means that all the stream segments flow in the correct direction. \n\n\n\nThis product contains fifteen feature types including: Waterbody, Mapped Stream, Mapped Node, Mapped Connectivity (Upstream), Mapped Connectivity (Downstream), Sea, Estuary, Dam, Structure, Canal Line, Water Pipeline, Terrain Break Line, Hydro Point, Hydro Line and Hydro Area.\n\n## **Purpose** \n\nThis product contains a geometric representation of the (major) surface water features of 'geographic Australia' excluding external territories. It is intended to be used as the basis for the production of consistent hydrological cartographic map products, as well as the visualisation of surface hydrology within a GIS to support the selection of features for inclusion in cartographic map production.\n\nThis product can also be used for stream tracing operations both upstream and downstream however, as this is a mapped representation, streams may be represented as interrupted or intermittent features. In contrast, the Geofabric Surface Network product represents the same stream as a continuous connected feature, that is, the path that stream would take (according to the terrain model) if sufficient water were available for flow. Therefore, for stream tracing operations where full stream connectivity is required, the Geofabric Surface Network product should be used.\n\n## **Dataset History** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\n\n\nGeofabric Surface Cartography is part of a suite of Geofabric products produced by the Australian Bureau of Meteorology. The source data input for the Geofabric Surface Cartography product is the AusHydro v1.7.2 (AusHydro) surface hydrology data set. The AusHydro database provides a seamless surface hydrology layer for Australia at a nominal scale of 1:250,000. It consists of lines, points and polygons representing natural and man-made features such as watercourses, lakes, dams and other water bodies. The natural watercourse layer consists of a linear network with a consistent topology of links and nodes that provide directional flow paths through the network for hydrological analysis. \n\n\n\nThis network was used to produce the GEODATA 9 Second Digital Elevation Model (DEM-9S) Version 3 of Australia (https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=66006).\n\n\n\nGeofabric Surface Cartography is an amalgamation of two primary datasets. The first is the hydrographic component of the GEODATA TOPO 250K Series 3 (GEODATA 3) product released by Geoscience Australia (GA) in 2006. The GEODATA 3 dataset contains the following hydrographic features: canal lines, locks, rapid lines, spillways, waterfall points, bores, canal areas, flats, lakes, pondage areas, rapid areas, reservoirs, springs, watercourse areas, waterholes, water points, marine hazard areas, marine hazard points and foreshore flats. \n\nIt also provides information on naming, hierarchy and perenniality. The dataset also contains cultural and transport features that may intersect with hydrographic features. These include: railway tunnels, rail crossings, railway bridges, road tunnels, road bridges, road crossings, water pipelines. \n\nRefer to the GEODATA 3 User Guide http://www.ga.gov.au/meta/ANZCW0703008969.html for additional information.\n\n\n\nThe second primary dataset is based on the GEODATA TOPO-250K Series 1 (GEODATA 1) watercourse lines completed by GA in 1994, which was supplemented by additional line work captured by the Australian National University (ANU) during the production of the DEM-9S to improve the representation of surface water flow. This natural watercourse dataset consists of directional flow paths and provides a direct link to the flow paths derived from the DEM. There are approximately 700,000 more line segments in this version of the data.\n\n\n\nAusHydro uses the natural watercourse geometry from the ANU enhanced GEODATA 1 data, and the attributes (names, perenniality and hierarchy) associated with GEODATA 3 to produce a fully attributed data set with topologically correct flow paths. The attributes from GEODATA 3 were attached using spatial queries to identify common features between the two datasets. Additional semi-automated and manual editing was undertaken to ensure consistent attribution along the entire network.\n\n\n\nAusHydro dataset includes a unique identifier for each line, point and polygon. AusHydro-ID will be used to maintain the dataset and to incorporate higher resolution datasets in the future. The AusHydro-ID will be linked to the ANUDEM streams through a common segment identifier and ultimately to a set of National Catchments Boundaries (NCBs).\n\n\n\nChanges at v2.1\n\n ! New Water Storages in the WaterBody FC.\n\n\n\nChanges at v2.1.1\n\n ! 16 New BoM Water Storages attributed in the AHGFWaterBody feature class\n\n and 1 completely new water storage feature added.\n\n\n\n - Correction to spelling of Numeralla river in AHGFMappedStream (formerly\n\n Numaralla).\n\n\n\n - Flow direction of Geometric Network set.\n\n\n\nProcessing steps: \n\n\n\n1. AusHydro Surface Hydrology dataset is received and loaded into the Geofabric development GIS environment\n\n2. feature classes from AusHydro are recomposed into composited Geofabric hydrography dataset feature classes in the Geofabric Maintenance Geodatabase.\n\n3. re-composited feature classes in the Geofabric Maintenance Geodatabase Hydrography Dataset are assigned unique Hydro-IDs using ESRI ArcHydro for Surface Water (ArcHydro: 1.4.0.180 and ApFramework: 3.1.0.84)\n\n4. feature classes from the Geofabric Maintenance Geodatabase hydrography dataset are extracted and reassigned to the Geofabric Surface Cartography Feature Dataset within the Geofabric Surface Cartography Geodatabase.\n\n\n\nA complete set of data mappings, from input source data to Geofabric Products, is included in the Geofabric Product Guide, Appendices.\n\n## **Dataset Citation** \n\nBureau of Meteorology (2014) Geofabric Surface Cartography - V2.1.1. Bioregional Assessment Source Dataset. Viewed 12 December 2018, http://data.bioregionalassessments.gov.au/dataset/ce5b77bf-5a02-4cf8-9cf2-be4a2cee2677.

## **摘要**

本数据集及其元数据声明由第三方提供给生物区域评估计划（Bioregional Assessment Programme），并按原始提供形式呈现于此。

Geofabric地表制图产品提供了一组相关要素类，可用作制作一致水文地图的基础。该产品包含澳大利亚（不含海外领地）主要地表水体要素的几何表示。这些要素以自然地表水文要素为主，但也包含部分人工要素（尤其是水库、运河及其他水文要素）。

该产品完全拓扑正确，即所有河段均按正确方向流动。

## **目的**

该产品包含澳大利亚（不含海外领地）主要地表水体要素的几何表示。其旨在作为制作一致水文地图产品的基础，同时用于地理信息系统（GIS）内地表水文的可视化，以支持选择纳入地图制作的要素。

该产品也可用于上下游河段追踪操作，但由于其为映射表示，河段可能表现为中断或间歇性要素。相比之下，Geofabric地表网络产品将同一河流表示为连续连接的要素，即若有足够水流，河流将遵循的路径（根据地形模型）。因此，若需要完整河流连通性的河段追踪操作，应使用Geofabric地表网络产品。

## **数据集历史**

本数据集及其元数据声明由第三方提供给生物区域评估计划（Bioregional Assessment Programme），并按原始提供形式呈现于此。

Geofabric地表制图是澳大利亚气象局（Australian Bureau of Meteorology）制作的一系列Geofabric产品的一部分。Geofabric地表制图产品的源数据输入为AusHydro v1.7.2（AusHydro）地表水文数据集。AusHydro数据库提供了澳大利亚1:250,000标称比例尺的无缝地表水文层，包含表示自然和人工要素（如水道、湖泊、水库及其他水体）的线、点和多边形。自然水道层由具有一致拓扑结构的链路和节点组成的线性网络构成，为水文分析提供网络内的定向流路径。

该网络用于制作澳大利亚GEODATA 9秒数字高程模型（DEM-9S）第3版（https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=66006）。

Geofabric地表制图是两个主要数据集的合并。第一个是澳大利亚地球科学局（Geoscience Australia，GA）于2006年发布的GEODATA TOPO 250K Series 3（GEODATA 3）产品的水文组件。GEODATA 3数据集包含以下水文要素：运河线、水闸、急流线、溢洪道、瀑布点、钻孔、运河区域、滩涂、湖泊、池塘区域、急流区域、水库、泉、水道区域、水坑、水点、海洋危险区域、海洋危险点及岸滩滩涂。

它还提供命名、层级和常年性信息。该数据集还包含可能与水文要素交叉的文化和交通要素，包括：铁路隧道、铁路交叉口、铁路桥梁、公路隧道、公路桥梁、公路交叉口、输水管道。

更多信息请参考GEODATA 3用户指南：http://www.ga.gov.au/meta/ANZCW0703008969.html。

第二个主要数据集基于澳大利亚地球科学局（GA）于1994年完成的GEODATA TOPO-250K Series 1（GEODATA 1）水道线，澳大利亚国立大学（Australian National University，ANU）在制作DEM-9S期间补充了额外线工作，以改进地表水流的表示。该自然水道数据集包含定向流路径，并提供与DEM衍生流路径的直接链接。此版本数据中新增了约700,000个线段。

AusHydro使用ANU增强的GEODATA 1数据中的自然水道几何形状，以及GEODATA 3相关的属性（名称、层级和常年性），生成具有拓扑正确流路径的完全属性化数据集。GEODATA 3的属性通过空间查询附加，以识别两个数据集之间的共同要素。此外还进行了半自动和手动编辑，以确保整个网络的属性一致性。

AusHydro数据集包含每个线、点和多边形的唯一标识符。AusHydro-ID将用于维护数据集，并在未来纳入更高分辨率数据集。AusHydro-ID将通过通用段标识符链接到ANUDEM河流，并最终链接到一组国家集水区边界（NCBs）。

v2.1版本变更

! WaterBody要素类（FC）中新增水库。

v2.1.1版本变更

! AHGFWaterBody要素类中新增16个澳大利亚气象局（BoM）水库属性，并添加1个全新水库要素。

和1个全新水库要素添加。

- 修正AHGFMappedStream中Numeralla河的拼写错误（原拼写为Numaralla）。

- 设置几何网络的流向。

处理步骤：

1. 接收AusHydro地表水文数据集并加载至Geofabric开发地理信息系统（GIS）环境

2. 将AusHydro中的要素类重组为Geofabric维护地理数据库中复合的Geofabric水文数据集要素类

3. 使用ESRI地表水ArcHydro工具（ArcHydro版本：1.4.0.180，ApFramework版本：3.1.0.84）为Geofabric维护地理数据库水文数据集中的重组要素类分配唯一Hydro-ID

4. 从Geofabric维护地理数据库水文数据集中提取要素类，并重新分配至Geofabric地表制图地理数据库内的Geofabric地表制图要素数据集

完整的从输入源数据到Geofabric产品的数据映射包含在《Geofabric产品指南》附录中。

## **数据集引用**

澳大利亚气象局（2014）Geofabric地表制图 - V2.1.1。生物区域评估源数据集。访问日期：2018年12月12日，http://data.bioregionalassessments.gov.au/dataset/ce5b77bf-5a02-4cf8-9cf2-be4a2cee2677。