{"help": "https://data.gov.au/data/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author": "Ryde City Council", "author_email": null, "contact_point": "cityofryde@ryde.nsw.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 2, "geospatial_topic": [], "id": "ef1644d3-1efb-4bf2-b3f3-09e2659f0bb0", "isopen": false, "license_id": "lsba", "license_title": "lsba", "maintainer": null, "maintainer_email": null, "metadata_created": "2025-06-24T19:00:56.784104", "metadata_modified": "2025-12-19T21:30:54.042872", "name": "nsw-fdp-macquarie-park-floodplain-risk-management-study-plan-flood-study-report", "notes": "In accordance with NSW Government policy, the Council of the City of Ryde is committed to\npreparing a Floodplain Risk Management Plan for Macquarie Park. This report documents the\nfirst stage of the process of preparing the Plan \u2013 that is, the preparation of a flood study report.\n\nThe study area consists of a portion of the Lane Cove River floodplain and those City of Ryde\nareas which drain in a northeasterly or easterly direction to it. Much of the 1,558ha study area\nis developed. It is crossed by a number of major roads including Epping Road, Lane Cove\nRoad and the M2 Motorway and the underground Epping to Chatswood railway line.\n\nThe consultants drew on both previous flood study reports and additional community\nconsultation to review historical records about flood problems that have been experienced in the\ncatchment and this process found that the two most widely reported floods were in November\n1984 and February 1990.\n\nComputer-based (DRAINS) hydrologic models and (TUFLOW) hydraulic models have been\ndeveloped. While substantial efforts have been made to compile as best a picture as possible\nof several relatively recent floods (i.e. November 1984 and February 1990), the resultant rainfall\nand water level data sets were found to provide only very general information about the floods.\n\nAs a consequence, while the models generally reproduce the observed flood regimes, formal\ncalibration against those events was not possible. The modelling confirmed that the November\n1984 event was worse than the February 1990 event and significant number of properties in\nnatural depressions experienced overland flow inundation. Additionally, some properties\nlocated adjacent to open creek channels experienced substantial depths of water.\nDesign flood event modelling followed and this report presents the results of modelling the\n20 year average recurrence interval (ARI) flood, the 100 year ARI flood and the Probable\nMaximum flood (PMF).\n\nThe detailed DRAINS and TUFLOW models provide a sound platform for the further flood\nmodelling tasks that will be undertaken during preparation of the Floodplain Risk Management\nStudy and Plan.\n\nSOFTWARE\n\nThe DRAINS software (Reference 7) has principally been used to model the hydrologic regime\nof the study area. It is a comprehensive hydrologic modelling program for designing and\nanalysing various types of catchments and urban stormwater drainage systems and includes\nhydraulic modelling capabilities for pipes and overland flowpaths. The software is widely used\nin Australia and Council itself has used DRAINS for many years.\nThe DRAINS model version is 2009.06.\n\nWhile it follows that DRAINS software is suitable for undertaking both hydraulic and hydrologic\nassessments of urban catchments \u2013 and both capabilities have been used in this study \u2013 it is\nimportant to note that the pipe hydraulic analysis undertaken within the subsequent hydraulic\nmodelling phase (refer Chapter 4) provides a more comprehensive picture of both pipe and\noverland flow rates.\n\nThe widely used and Australian developed TUFLOW software (Reference 6) was chosen as\nthe hydraulic modelling tool for use in the study because of its capability to simulate flood flows\nalong both open watercourses and potentially complicated networks of overland flowpaths such\nas occurs in the study area.\n\nThe technical description of the TUFLOW model and its specific application to the study area is\nprovided in Appendix C. The TUFLOW build model is 2008-08-AF- ISP.\nThe following sections of the report describe the establishment and operation of the TUFLOW\nmodel to simulate:\n<ul>\n<li>the November 1984 and February 1990 events using DRAINS-derived flows. The\nsimulated flood levels and extents for this event were then compared with the historical\ninformation; and</li>\n<li>the design 5 year, 20 year, 50 year, 100 year ARI and PMF events.</li>\n</ul>", "num_resources": 1, "num_tags": 4, "organization": {"id": "33916e6a-f6c6-41d7-b51d-fc936ddd53a3", "name": "ryde-city-council-datansw", "title": "Ryde City Council", "type": "organization", "description": "The City of Ryde is a local government area that services certain suburbs located within the Lower North Shore and Northern Suburbs of Sydney, NSW; proclaimed as the City of Ryde in 1992.\r\n\r\nThe local government area extends from the Parramatta River to the Lane Cove River which encircles the area in the north, and is bounded in the east by the peninsula of Hunters Hill and the City of Parramatta in the west.\r\nIt is 40.65km2 in area and home to over 117,170 people.  \r\n\r\nhttp://www.ryde.nsw.gov.au/Home\r\n\r\nCouncil has undertaken several studies on overland flow and localised flooding of Macquarie Park Catchment and the Eastwood and Terry\u2019s Creek Catchment\r\nhttp://www.ryde.nsw.gov.au/Business-and-Development/Planning-Controls/Other-Planning-Considerations/Flood-Prone-Areas", "image_url": "", "created": "2025-06-24T07:34:50.625374", "is_organization": true, "approval_status": "approved", "state": "active"}, "original_harvest_source": {"site_url": "https://data.nsw.gov.au/data/", "href": "https://data.nsw.gov.au/data/dataset/nsw-fdp-macquarie-park-floodplain-risk-management-study-plan-flood-study-report", "title": "DataNSW"}, "original_name": "nsw-fdp-macquarie-park-floodplain-risk-management-study-plan-flood-study-report", "owner_org": "33916e6a-f6c6-41d7-b51d-fc936ddd53a3", "private": false, "promotion_level": "0", "remote_last_updated": "2025-12-17 02:14:04.027932", "spatial": "{\"type\": \"Point\",\"coordinates\": [147.0179,-32.1618]}", "spatial_coverage": "New South Wales (NSW81093)", "state": "active", "temporal_coverage_from": "2022-02-02 22:51:59.137495", "temporal_coverage_to": "2010-04-01 00:00:00", "title": "Macquarie Park Floodplain Risk Management Study & Plan", "type": "dataset", "unpublished": false, "url": "", "version": null, "extras": [{"key": "harvest_object_id", "value": "b86ef9ea-df66-46cf-a777-0eff461f6b14"}, {"key": "harvest_source_id", "value": "9ebac586-8e51-4904-9f6c-d9b79726659a"}, {"key": "harvest_source_title", "value": "DataNSW"}], "resources": [{"cache_last_updated": null, "cache_url": null, "created": "2025-12-17T02:14:04.073131", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "format": "HTML", "hash": "", "id": "1f6c0a4e-7180-44fe-9fc5-11bb2a3366a8", "last_modified": null, "metadata_modified": "2025-12-19T21:30:48.404117", "mimetype": null, "mimetype_inner": null, "name": "Macquarie Park - Floodplain Risk Management Study & Plan - Flood Study Report", "package_id": "ef1644d3-1efb-4bf2-b3f3-09e2659f0bb0", "position": 0, "resource_type": null, "size": null, "state": "active", "url": "https://flooddata.ses.nsw.gov.au/dataset/510aa998-0935-413d-bc4c-49be25ca5c36/resource/5e867475-7091-49ee-81c5-eada84869dd7", "url_type": null, "zip_extract": false}], "tags": [{"display_name": "Macquarie Park", "id": "01c4d382-3373-456e-809c-d674ce55624f", "name": "Macquarie Park", "state": "active", "vocabulary_id": null}, {"display_name": "floodplain", "id": "291090a0-cb29-458d-878b-a7648c4c4210", "name": "floodplain", "state": "active", "vocabulary_id": null}, {"display_name": "hydraulic model", "id": "5ea1bf91-c991-4e1b-808e-2528b9741aa5", "name": "hydraulic model", "state": "active", "vocabulary_id": null}, {"display_name": "hydrologic model", "id": "306ddc3f-3866-4055-8fd7-0e4cd32a2a1a", "name": "hydrologic model", "state": "active", "vocabulary_id": null}], "groups": [], "relationships_as_subject": [], "relationships_as_object": []}}