Namoi HRV ratios

## **Abstract** \n\nThis dataset was derived by the Bioregional Assessment Programme from source datasets. The source datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.\n\n\n\nThree shapefiles containing point features of Namoi subregion surface water nodes with summarised hydrological response variables (HRV) data for zero flow days (ZFD), high flow days (HFD) and annual flow (AF).\n\n## **Purpose** \n\nCreated to facilitate NAM 3-4 product maps.\n\n## **Dataset History** \n\nThe input surface water HRV shape file (AWRAR_NAM_reaches_V2 (GUID: 433a27f1-cee8-499e-970a-607c6a25e979) has been augmented with data from the spreadsheet (NAM_HRVs_interperiod_scatter_spatial_plot_data_v3), by linking to the node number.\n\nFor the Namoi subregion an extra step was required as the node number in the shapefile are not the same as the spreadsheet, so there was a linking table (gauge_node_relation.xlsx).\n\n\n\nFor each dataset, a new shapefile was produced - zero flow days (ZFD), high flow days (HFD) and annual flow (AF).\n\n\n\nThe data taken from the spreadsheet was:\n\nZFD. ZFD_corrected worksheet for ratio data with p_max data coming from ZFD worksheet.\n\nHFD. FD_corrected worksheet for both ratio and amax data\n\nAF. AF_corrected worksheet for both ratio and amax data\n\n\n\nMaps use the ratio data for mapping with classes shown on maps except where the following was true, the ratio was replaced with 'no significant change'\n\n\n\namax for LFD