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In such situations, a different floodplain management strategy applies (for example, the Swan River between the Narrows and Canning Bridges).\n\nThis dataset comprises two polygons - Flood fringe, and Floodway. The flood fringe is that part of the floodplain where development may be considered acceptable subject to certain building conditions that will provide adequate flood protection. The floodway is that part of the 1 in 100 (1%) AEP floodplain where development that is considered obstructive to major flows is not acceptable as it would increase flood levels upstream. No new buildings are acceptable in the floodway.\n\nLicense: Creative Commons Non-Commercial (Any)\n\nTags: DoW, Flood, Floodway, Floodplain, Hazards, Water\n\nContact: gerard.paul@dwer.wa.gov.au", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 7844, "latestWkid": 7844, "xyTolerance": 8.983152841195213E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "uniqueValue", "field1": "ext_type", "uniqueValueInfos": [ { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 255, 255, 190, 255 ], "outline": null }, "value": "Floodway", "label": "Floodway" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 191, 233, 255, 255 ], "outline": null }, "value": "Flood fringe", 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