Regulated and unregulated stream reaches in the Murray Darling Basin within the network of the AWRA-R river systems model

This dataset contains a classification of the stream reaches in the Murray Darling Basin as either regulated or unregulated within the network of the AWRA-R river systems model. The dataset was created for the purposes of identifying which reaches are potentially impacted by river regulation and could potentially be capable of receiving environmental water releases from storages. The definition of a regulated reach that has been adopted here is simply being downstream of a major storage. This is a much more inclusive definition of regulated than is adopted for water resources applications: “River on which a licensed entitlement regime exists with centralised allocation, and from which orders may be placed for upstream release of a licensed allocation” (http://www.bom.gov.au/water/awid/id-996.shtml).\n\nThe dataset contains a figure displaying the data (reg_unreg.png), the major storages dataset (MDB_reservoirs_250K.shp) and a shapefile for the stream reaches (AWRA-Rv5_MDB_streams_reg_unreg.shp). The stream reaches shapefile has Reach ID and ID_updated fields as used in AWRA-R, there are also fields for GaugeID and GaugeName which are the downstream gauge number and name and a regulation field that contains the classification as either Regulated or Unregulated.\n\nLineage: The major storages were selected as those that are the main sources for irrigation and environmental water, small weirs and town water supplies have not been included. The dataset is composed of the 32 storages that have storage volumes regularly updated by the MDBA (https://www.mdba.gov.au/water-management/murray-darling-reports-data/water-in-storages), the 3 on-stream storages in the Wimmera Catchment that are used for environmental releases (https://www.vewh.vic.gov.au/rivers-and-wetlands/western-region/wimmera-system) and 10 other storages that have been incorporated into AWRA-R. The outline of these 45 storages is from the polygons from GA’s 250K topographic maps.\n\nThe stream reaches included in the classification are from the AWRA-R model of the Murray Darling Basin (Dutta et al, 2015) with the polylines selected from GA’s 250K topographic maps. The classification of regulated or unregulated was done manually for each stream reach.\n

本数据集针对AWRA-R河流水系模型（AWRA-R river systems model）网络内的墨累-达令盆地（Murray Darling Basin）河道河段，开展了受调控与未受调控的分类工作。本数据集的构建目的，在于识别哪些河段可能受到河道调控的影响，且具备承接蓄水工程环境补水的潜力。本次采用的受调控河段定义极为简洁：即位于大型蓄水工程下游的河段。该定义相较水资源应用领域的通用标准更为宽泛，后者将受调控河段定义为"存在许可取水权制度并实施集中分配，且可针对许可配额的上游放水下达调度指令的河道"（来源：http://www.bom.gov.au/water/awid/id-996.shtml）。

本数据集包含展示分类结果的图片（reg_unreg.png）、大型蓄水工程数据集（MDB_reservoirs_250K.shp），以及河道河段的shapefile文件（AWRA-Rv5_MDB_streams_reg_unreg.shp）。该河道河段shapefile包含AWRA-R模型中使用的Reach ID与ID_updated字段，同时附带GaugeID、GaugeName字段（分别代表下游水文站编号与名称），以及标注分类结果的regulation字段，其取值为"受调控（Regulated）"或"未受调控（Unregulated）"。

溯源信息：本次筛选的大型蓄水工程均为灌溉与环境补水的主要水源地，小型堰坝及城镇供水蓄水工程未纳入本数据集。本数据集共包含45座蓄水工程：其中32座库容数据由墨累-达令盆地管理局（MDBA）定期更新（数据来源：https://www.mdba.gov.au/water-management/murray-darling-reports-data/water-in-storages）；3座为威默拉流域（Wimmera Catchment）内用于环境放水的河道型蓄水工程（数据来源：https://www.vewh.vic.gov.au/rivers-and-wetlands/western-region/wimmera-system）；其余10座为已纳入AWRA-R模型的蓄水工程。上述45座蓄水工程的轮廓数据取自澳大利亚地质调查局（GA）的25万比例尺地形图面要素。

本次分类涵盖的河道河段取自墨累-达令盆地的AWRA-R模型（Dutta等，2015），其折线要素源自澳大利亚地质调查局的25万比例尺地形图。所有河道河段的受调控/未受调控分类均通过人工手动完成。