Surface water Preliminary Assessment Extent (PAE) for the Namoi (NAM) subregion - v03

## **Abstract** \n\nThis dataset was derived by the Bioregional Assessment Programme. The parent datasets are included in the dataset. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.\n\nThe surface water Preliminary Assessment Extent (PAE) for the Namoi subregion is derived from surface water hydrology features and takes into account directional flow of surface water as well as connectivity pathways. The PAE is based on the 1956 flood map. 1956 is not the wettest year on record but had the largest flood to date due to 1955 being also a wet year for the Namoi region. The 1956 flood extent has been added to flood extent determined by the The River Murray Floodplain Inundation Model (RIMFIM/MODIS maximum flood extent and the PAE drawn by hand with the assistance of expert opinion The file contained within the dataset called SurfaceWaterZoneofImapctMap_enveloped1.pdf shows the hand drawn boundary.\n\n\n\n\\[x\\[ Santosh Aryal drew surface water PAE over the 1956 flood map in consultation with Peter Baker and Damian Barrett. 1956 flood extent has been added to RIMFIM/MODIS maximum flood extent for other parts of upper MDB (see SurfaceWaterZoneofImapctMap_enveloped1.pdf). Or is it OWL >5% flood mapping by Gordon McKay. The original map is included in the dataset (\\\\OSM-07-CDC.it.csiro.au\\OSM_CBR_LW_BA_reference\\repository\\NIC\\NAM\\DATA\\Geography\\AdministrativeBoundaries\\NAM_SW_PAE__v03_20130815\\Documentation\\SurfaceWaterZoneofImapctMap_enveloped1.pdf)\n\nExpert scientist view (Damian Barrett - see DamiansPolygon.pdf)\n\n\\*\tNo need to include full floodplain (consider flood volume)\n\n\\*\tKeep lower Namoi alluvium as may be impacted\n\n\\*\tStay west of Hunter-Mooki Fault\n\n\\*\tElsewhere use catchment boundaries\n\n \\]x\\]\n\n## **Purpose** \n\nThe purpose of the PAE is to provide a first step in the process of determining whether a water-related link is possible between coal resource development and the assets. It is intended to be a realistic yet inclusive estimate of the land surface area where potential impacts might occur. As the model-data analysis, impact analysis and risk analysis components of a BA are completed it will be possible to more closely characterise and quantify impacts in terms of their extent and their likelihood.\n\n## **Dataset History** \n\nThe surface water Preliminary Assessment Extent (PAE) for the Namoi subregion is derived from surface water hydrology features and takes into account directional flow of surface water as well as connectivity pathways. The PAE is based on the 1956 flood map. 1956 is not the wettest year on record but had the largest flood to date due to 1955 being also a wet year for the Namoi region. The 1956 flood extent has been added to flood extent determined by the The River Murray Floodplain Inundation Model (RIMFIM/MODIS maximum flood extent and the PAE drawn by hand with the assistance of expert opinion The file contained within the dataset called SurfaceWaterZoneofImapctMap_enveloped1.pdf shows the hand drawn boundary.This boundary was digitised to create the shapefile defining the SW PAE.\n\n## **Dataset Citation** \n\nBioregional Assessment Programme (2015) Surface water Preliminary Assessment Extent (PAE) for the Namoi (NAM) subregion - v03. Bioregional Assessment Source Dataset. Viewed 11 December 2018, http://data.bioregionalassessments.gov.au/dataset/b4a6ad8e-c61a-44e6-8879-f7143acd1791.

**摘要**

本数据集由生物区域评估计划（Bioregional Assessment Programme）生成，其源数据集已包含于本数据集中。本次衍生数据集的制作流程详见本元数据声明中的“历史”字段。

纳米伊次区域的地表水初步评估范围（Preliminary Assessment Extent，PAE）基于地表水水文特征生成，同时考虑了地表水的定向流动与连通路径。该PAE以1956年洪水淹没图为基础。1956年并非有记录以来最湿润的年份，但因1955年纳米伊地区同样降水充沛，该年发生了迄今为止规模最大的洪水。研究将1956年洪水范围与墨累河洪泛区淹没模型（River Murray Floodplain Inundation Model，RIMFIM）/MODIS最大洪水范围相结合，并结合专家意见手绘生成PAE。本数据集中的SurfaceWaterZoneofImapctMap_enveloped1.pdf文件展示了该手绘边界。

[x[ 桑托什·阿里亚尔（Santosh Aryal）与彼得·贝克（Peter Baker）、达米安·巴雷特（Damian Barrett）协作，在1956年洪水图上绘制了地表水PAE。针对墨累-达令盆地（Murray-Darling Basin，MDB）上游其他区域，研究将1956年洪水范围与RIMFIM/MODIS最大洪水范围相结合（详见SurfaceWaterZoneofImapctMap_enveloped1.pdf），亦或采用戈登·麦凯（Gordon McKay）绘制的OWL＞5%洪水分布图。原始地图已包含于本数据集内（路径：\OSM-07-CDC.it.csiro.auOSM_CBR_LW_BA_reference
epositoryNICNAMDATAGeographyAdministrativeBoundariesNAM_SW_PAE__v03_20130815DocumentationSurfaceWaterZoneofImapctMap_enveloped1.pdf）

专家科学意见（达米安·巴雷特，详见DamiansPolygon.pdf）：
* 无需覆盖全部洪泛区（需结合洪水体积考量）
* 保留纳米伊下游冲积层，因其可能受影响
* 边界划定于亨特-穆基断层以西
* 其余区域采用流域边界

]x]

## **目的**

本PAE的核心目的是作为第一步，用于评估煤炭资源开发与相关资产之间是否存在水文关联。其目标是对潜在影响可能波及的陆地区域做出兼具现实性与包容性的估算。待生物区域评估（Bioregional Assessment，BA）的模型数据分析、影响分析与风险分析环节完成后，便可进一步精准刻画并量化影响的范围与发生概率。

## **数据集历史**

纳米伊次区域的地表水初步评估范围（PAE）基于地表水水文特征生成，同时考虑了地表水的定向流动与连通路径。该PAE以1956年洪水淹没图为基础。1956年并非有记录以来最湿润的年份，但因1955年纳米伊地区同样降水充沛，该年发生了迄今为止规模最大的洪水。研究将1956年洪水范围与墨累河洪泛区淹没模型（RIMFIM）/MODIS最大洪水范围相结合，并结合专家意见手绘生成PAE。本数据集中的SurfaceWaterZoneofImapctMap_enveloped1.pdf文件展示了该手绘边界，该边界经数字化处理后生成了定义地表水PAE的形状文件。

## **数据集引用**

生物区域评估计划（2015）《纳米伊（NAM）次区域地表水初步评估范围（PAE）- 版本3》，生物区域评估源数据集。2018年12月11日查阅，来源：http://data.bioregionalassessments.gov.au/dataset/b4a6ad8e-c61a-44e6-8879-f7143acd1791.