Geofabric Hydrology Reporting Regions - V2.1

## **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\nGeofabric Hydrology Reporting Regions is derived from aggregations of contracted catchments from Geofabric Hydrology Reporting Catchments. This product contains two candidate reporting regions, namely AWRA Drainage Division for national scale reporting purposes and River Region for regional scale reporting purposes. More reporting regions may be added in future releases based on user requirements. \n\n\n\nThis product contains four feature types including: AWRA Drainage Division, AWRA Drainage Division Contracted Catchment Lookup, River Region, and River Regions Contracted Catchment Lookup.\n\n## **Purpose** \n\nThe purpose of Geofabric Hydrology Reporting Regions is to provide a stable set of reporting boundaries for products such as the Bureau's Australian Water Resources Assessment (AWRA). It contains two levels of hydrological reporting regions. The first delineates national level Drainage Divisions and the second delineates regional level River Regions across Australia. \n\n\n\nThe AWRA Drainage Division is defined for the purpose of providing a stable set of reporting regions specifically for the purpose of the Bureau's Australian Water Resources Assessment 2010 and are referred to as the 2010 Assessment Reporting regions. \n\n\n\nThe River Regions were based on a specification developed by Bureau hydrologists involved in water resources assessment in consultation with the Geofabric team and scientists from CSIRO and ANU. These boundaries were developed for use in regional scale reporting and hydrological modelling.\n\n(See html stored with data for more)\n\n## **Dataset History** \n\nGeofabric Hydrology Reporting Regions is part of a suite of Geofabric products produced by the Australian Bureau of Meteorology. The geometry of this product is derived from aggregations of Contracted catchments within the Hydrology Reporting Catchments product.\n\n\n\nThis product contains two candidate reporting regions, namely AWRA Drainage Divisions for national scale reporting purposes and River Regions for regional scale reporting purposes. More reporting regions will be added in future releases based on user requirements. \n\nThe AWRA Drainage Divisions were defined for the purpose of providing a stable set of reporting regions specifically for the purpose of the Bureau's Australian Water Resources Assessment (AWRA) 2010 and are referred to as the 2010 Assessment Reporting Regions.\n\n\n\nThe AWRA Drainage Divisions were based on the NCB Level 1 Drainage Division feature within the Geofabric Surface Catchments product with the addition of an extra division dividing NSW and Victoria. This division was based on a boundary derived from the NCB Level 2 Drainage Basin feature and was chosen to best approximate the border between New South Wales (NSW) and Victoria, creating the South East Coast (Victoria) and South East Coast (NSW) regions.\n\n\n\nThe River Regions were based on a specification developed by Bureau hydrologists involved in water resource assessment in consultation with the Geofabric team and scientists from CSIRO and ANU. These boundaries were developed for use in regional scale reporting and hydrological modelling.\n\n\n\nThe River Regions were based on the NCB Level 2 Drainage Basins, within the Geofabric Surface Catchments product, for every location in Australia except for the Murray Darling Basin (MDB) where a finer level of division was required. \n\n\n\nThe boundaries within the MDB were originally developed on the selections of Pfafstetter levels 3 to 7 that best approximated the Australian Water Resource Council (AWRC) river basins. A set of decision rules was developed using evidence from the GEODATA 9 Digital Elevation Model (DEM-9S) Version 3.1 flow direction grid, the 1 second DEM-H Shuttle Radar Topography Mission (STRM) data, Bing Maps Satellite Images, Geofabric stream flow directions and Geofabric Surface Cartography data. Particular attention was given to areas with internal draining basins, minimal or no streams, and floodplain areas with anabranch and braided streams. \n\nThese informed the creation of MDB Contracted nodes which correspond to features in the landscape with hydrological significance, with subsequent creation of Contracted catchments. Contracted catchments were then aggregated to create River Regions within the MDB.\n\n\n\nProcessing steps: \n\n1. re-composited feature classes in the Geofabric Maintenance Geodatabase Feature Dataset are assigned unique Hydro-IDs using ESRI ArcHydro for Surface Water (ArcHydro: 1.4.0.180 and ApFramework: 3.1.0.84)\n\n2. feature classes from the Geofabric Maintenance Geodatabase Feature Dataset are extracted and reassigned to the Geofabric Hydrology Reporting Regions Feature Dataset within the Geofabric Hydrology Reporting Regions 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 (2011) Geofabric Hydrology Reporting Regions - V2.1. Bioregional Assessment Source Dataset. Viewed 12 December 2018, http://data.bioregionalassessments.gov.au/dataset/3d482415-233f-4ffd-9dd1-20d37b85229f.

**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），本文档按原始提供的形式呈现。

地理结构水文报告分区（Geofabric Hydrology Reporting Regions）源自地理结构水文报告集水区（Geofabric Hydrology Reporting Catchments）中约束集水区的聚合操作。该数据集包含两类候选报告分区，即用于国家级报告的澳大利亚水资源评估（AWRA）排水分区，以及用于区域级报告的河流区域。后续版本将根据用户需求新增更多报告分区。

该数据集包含四类要素类型，分别为：AWRA排水分区、AWRA排水分区约束集水区查找表、河流区域以及河流区域约束集水区查找表。

**目的**

地理结构水文报告分区的设计目的是为澳大利亚气象局（Bureau of Meteorology）的澳大利亚水资源评估（AWRA）等产品提供一套稳定的报告边界。该数据集包含两级水文报告分区：一级为覆盖全澳的国家级排水分区，二级为区域级河流区域。

AWRA排水分区专为澳大利亚气象局2010年澳大利亚水资源评估项目设立，作为稳定的报告分区体系，因此也被称为“2010年评估报告分区”。

河流区域的规范由参与水资源评估的澳大利亚气象局水文专家制定，并与地理结构团队、联邦科学与工业研究组织（CSIRO）及澳大利亚国立大学（ANU）的科学家协商完成。该分区边界专为区域级报告与水文建模工作开发。

（详见随数据集附带的HTML文档以获取更多信息）

**数据集历史**

地理结构水文报告分区是澳大利亚气象局（Australian Bureau of Meteorology）推出的系列地理结构产品之一。该数据集的空间几何信息源自水文报告集水区产品中约束集水区的聚合操作。

该数据集包含两类候选报告分区，即用于国家级报告的AWRA排水分区，以及用于区域级报告的河流区域。后续版本将根据用户需求新增更多报告分区。

AWRA排水分区专为澳大利亚气象局2010年澳大利亚水资源评估项目设立，作为稳定的报告分区体系，因此也被称为“2010年评估报告分区”。

AWRA排水分区以地理结构地表集水区产品中的国家集水区边界（NCB）一级排水分区为基础，新增了一个划分新南威尔士州（NSW）与维多利亚州的分区。该新增分区以NCB二级流域为基础划定边界，旨在尽可能贴合新南威尔士州与维多利亚州的州界，由此形成了东南海岸（维多利亚州）与东南海岸（新南威尔士州）两个分区。

河流区域的规范由参与水资源评估的澳大利亚气象局水文专家制定，并与地理结构团队、联邦科学与工业研究组织（CSIRO）及澳大利亚国立大学（ANU）的科学家协商完成。该分区边界专为区域级报告与水文建模工作开发。

河流区域以地理结构地表集水区产品中的NCB二级流域为基础，覆盖澳大利亚全境，但墨累-达令盆地（Murray Darling Basin, MDB）除外——该区域需要更精细的分区层级。

墨累-达令盆地的分区边界最初基于帕夫斯泰特分级（Pfafstetter levels）3至7级的要素划定，这些要素尽可能贴合澳大利亚水资源委员会（AWRC）划定的流域范围。研究团队基于以下数据源制定了一套决策规则：GEODATA 9数字高程模型（DEM-9S）3.1版流向网格、1秒分辨率DEM-H航天飞机雷达地形测绘任务（STRM）数据、必应地图卫星影像、地理结构水系流向数据及地理结构地表制图数据。团队特别关注了内流盆地、支流稀少或无支流的区域，以及带有分流河与辫状河的洪泛平原区域。

这些考量为墨累-达令盆地约束节点（MDB Contracted nodes）的创建提供了依据——这些节点对应具有水文意义的地表要素，随后以此创建约束集水区，最终通过聚合约束集水区得到墨累-达令盆地内的河流区域。

处理流程：

1. 利用ESRI地表水ArcHydro工具（ArcHydro: 1.4.0.180 及 ApFramework: 3.1.0.84），为地理结构维护地理数据库要素数据集中的重组要素类分配唯一的水文ID（Hydro-ID）。
2. 提取地理结构维护地理数据库要素数据集中的要素类，并重新分配至地理结构水文报告分区地理数据库内的地理结构水文报告分区要素数据集。

从输入源数据到地理结构产品的完整数据映射表已收录于《地理结构产品指南》附录中。

**数据集引用**

澳大利亚气象局（2011）地理结构水文报告分区V2.1. 生物区域评估源数据集. 2018年12月12日查阅，http://data.bioregionalassessments.gov.au/dataset/3d482415-233f-4ffd-9dd1-20d37b85229f.