{ "currentVersion": 10.81, "serviceDescription": "Riverine flood maps show residents the effect of widespread and prolonged rainfall over a large catchment area. Riverine flood events may cause elevated water levels at our rivers and creeks for several days. Flash flooding can also occur following intense localised rainfall and with little warning.\nThese maps provide an estimate of how and where water will rise during a flood event. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and our community.\nExtreme event:\nLow chance of occurrence, 0.05% annually, 3% in a 70 year period.\nExamples (between major and extreme):\n\u2022\tFeb 1893 - All major river catchments (Riverine Flooding)\n\u2022\tMarch 2012 - Alexandra HeadlandKawana/Mooloolaba/Buddina/Warana/Alexandra Headland (Flash Flood)\n\u2022\tMay 2015 - Beerwah/Glasshouse (Flash Flood)\nMajor event:\nMedium chance of occurrence, 1% annually, 50% in a 70 year period.\nExamples:\n\u2022\tFeb 2020 - Yaroomba/Mt Coolum/Marcoola (Flash Flood)\n\u2022\tFeb 1992 - Maroochy River (Riverine Flood)\n\u2022\tJune 1983 - Nambour (Flash Flood)\n\u2022\tMar 1955 - Kenilworth (Riverine Flood)\nModerate event:\nHigh chance of occurrence, 10% annually, 99.9% in a 70 year period.\nExamples:\n\u2022\tJan 2012 - Nambour (Riverine Flood)\n\u2022\tJan 2011 & Jan 2013 - Kenilworth (Riverine Flood)\nMinor event:\nExtreme chance of occurrence, 40% annually, 100% in a 70 year period.\nMap published August 2021. Base terrain information is 2014/2018 aerial survey, enhanced with new Development DEMs where available.\n\nThis mapping presents surge heights above the Highest Astronomical Tide to show the effects of additional surge from the ocean during meteorological (storm) conditions. \nThis information is important for emergency preparedness as it assists with disaster management and planning, for both council and the community.\nExamples:\n\u2022\tDec 2020 - All low lying coastal areas (0.3-0.4 m above HAT)\nThe maps were updated with new information in August 2021.", "mapName": "Emergency Preparedness", "description": "", "copyrightText": "Sunshine Coast Regional Council", "supportsDynamicLayers": true, "layers": [ { "id": 0, "name": "Minor Event", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": [ 1, 2 ], "minScale": 288895, "maxScale": 0, "type": "Group Layer" }, { "id": 1, "name": "Flood Hazard", "parentLayerId": 0, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" }, { "id": 2, "name": "Overland Flow", "parentLayerId": 0, "defaultVisibility": true, "subLayerIds": null, "minScale": 10000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 3, "name": "Moderate Event", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": [ 4, 5 ], "minScale": 288895, "maxScale": 0, "type": "Group Layer" }, { "id": 4, "name": "Flood Hazard", "parentLayerId": 3, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" }, { "id": 5, "name": "Overland Flow", "parentLayerId": 3, "defaultVisibility": true, "subLayerIds": null, "minScale": 10000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 6, "name": "Major Event", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": [ 7, 8, 9 ], "minScale": 288895, "maxScale": 0, "type": "Group Layer" }, { "id": 7, "name": "Flood Hazard", "parentLayerId": 6, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" }, { "id": 8, "name": "Overland Flow", "parentLayerId": 6, "defaultVisibility": true, "subLayerIds": null, "minScale": 10000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 9, "name": "Potential Flooding outside of modelled extents", "parentLayerId": 6, "defaultVisibility": true, "subLayerIds": null, "minScale": 25000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 10, "name": "Extreme Event", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": [ 11, 12, 13 ], "minScale": 288895, "maxScale": 0, "type": "Group Layer" }, { "id": 11, "name": "Flood Hazard", "parentLayerId": 10, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Raster Layer" }, { "id": 12, "name": "Overland Flow", "parentLayerId": 10, "defaultVisibility": true, "subLayerIds": null, "minScale": 10000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 13, "name": "Potential Flooding outside of modelled extents", "parentLayerId": 10, "defaultVisibility": true, "subLayerIds": null, "minScale": 25000, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPolygon" }, { "id": 14, "name": "Storm Tide Flood", "parentLayerId": -1, "defaultVisibility": false, "subLayerIds": null, "minScale": 288895, "maxScale": 0, "type": "Raster Layer" } ], "tables": [], "spatialReference": { "wkid": 102100, "latestWkid": 3857 }, "singleFusedMapCache": false, "initialExtent": { "xmin": 1.695546480207453E7, "ymin": -3110295.040712285, "xmax": 1.7075413765291616E7, "ymax": -3040260.3234790824, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "fullExtent": { "xmin": 1.6987645430270292E7, "ymin": -3116740.091682229, "xmax": 1.7049796179571792E7, "ymax": -3049429.9570619557, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "minScale": 288895, "maxScale": 0, "units": "esriMeters", "supportedImageFormatTypes": "PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP", "documentInfo": { "Title": "Emergency Preparedness", "Author": "Sunshine Coast Regional Council", "Comments": "Riverine flood maps show residents the effect of widespread and prolonged rainfall over a large catchment area. Riverine flood events may cause elevated water levels at our rivers and creeks for several days. Flash flooding can also occur following intense localised rainfall and with little warning.\nThese maps provide an estimate of how and where water will rise during a flood event. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and our community.\nExtreme event:\nLow chance of occurrence, 0.05% annually, 3% in a 70 year period.\nExamples (between major and extreme):\n\u2022\tFeb 1893 - All major river catchments (Riverine Flooding)\n\u2022\tMarch 2012 - Alexandra HeadlandKawana/Mooloolaba/Buddina/Warana/Alexandra Headland (Flash Flood)\n\u2022\tMay 2015 - Beerwah/Glasshouse (Flash Flood)\nMajor event:\nMedium chance of occurrence, 1% annually, 50% in a 70 year period.\nExamples:\n\u2022\tFeb 2020 - Yaroomba/Mt Coolum/Marcoola (Flash Flood)\n\u2022\tFeb 1992 - Maroochy River (Riverine Flood)\n\u2022\tJune 1983 - Nambour (Flash Flood)\n\u2022\tMar 1955 - Kenilworth (Riverine Flood)\nModerate event:\nHigh chance of occurrence, 10% annually, 99.9% in a 70 year period.\nExamples:\n\u2022\tJan 2012 - Nambour (Riverine Flood)\n\u2022\tJan 2011 & Jan 2013 - Kenilworth (Riverine Flood)\nMinor event:\nExtreme chance of occurrence, 40% annually, 100% in a 70 year period.\nMap published August 2021. 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