{"help": "https://data.gov.au/data/en/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author": "Canterbury-Bankstown Council", "author_email": null, "contact_point": "info@www.cbcity.nsw.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 2, "geospatial_topic": [], "id": "c9a75df8-e8da-4a33-aeb4-dbe41051b95c", "isopen": false, "license_id": "cc-by", "license_title": "Creative Commons Attribution 3.0 Australia", "license_url": "http://creativecommons.org/licenses/by/3.0/au/", "maintainer": null, "maintainer_email": null, "metadata_created": "2026-01-10T18:20:22.505766", "metadata_modified": "2026-03-01T20:26:14.655778", "name": "nsw-fdp-east-hills-stormwater-catchment-flood-study-report", "notes": "Study Area\n\nThe study area is located within the Sydney suburb of East Hills. The study area is a small\nurban catchment centred on the East Hills Railway station, which drains through a\nstormwater pipe network to the Georges River. Much of the study area is also affected by\nflooding from the Georges River, where a series of blockwall \u201cfinger levees\u201d have been\nconstructed to reduce flood velocities and the hazard experienced to the occupants of\nriverfront dwellings. The catchment is wholly within the Bankstown local government area.\n\nReport Structure\n\nThis report is divided into two parts. The first part provides background on the study and\nfurther discussion of the available data, modelling approach and results from the flood model\nthat was established to analyse flooding within the catchment. The second part is a technical\nreport that provides additional detail concerning the flood model, model results and flood\nmapping, which is included as an appendix.\n\nOutcomes from the Study\n\nOutcomes from this study include:\n(i) a database of all drainage assets within the study area;\n(ii) establishment of a computer model capable of assessing flood behaviour;\n(iii) information on flood behaviour under existing catchment conditions; and\n(iv) a model that can be used to assess flood mitigation options and future development\nproposals.\n\nDatabase of Drainage Assets\n\nAll data collected for the study has been included within a GIS database. This allows the\ndata to be spatially represented across the study area and allows for easy retrieval of the\ndata as required. Information in the database includes data for some 88 stormwater pits and\n83 stormwater drainage pipelines.\n\nOther catchment data, including aerial photography, property cadastre, building footprints\nand the terrain surface (based on ALS survey) is also represented in the database.\n\nComputer Modelling\n\nA numerical computer model was developed for the catchment to simulate flood behaviour,\nusing the computer program known as TUFLOW. Surface flows are represented in the\nmodel through a 2-dimensional grid covering the entire study area. The stormwater pipe\nnetwork is included as 1-dimensional elements within this grid.\n\nFull details of the modelling approach, modelling parameters and other assumptions are\nincluded in the Flood Model Report, which is included in Appendix A.\n\nExisting Flood Behaviour\n\nDesign flood behaviour has been computed for a range of floods, ranging from relatively\nfrequent events to more extreme floods, under existing (2007) catchment conditions.\nThe model produces a grid of results over the study area providing data on flood levels,\nflood depths and flood velocities. Flood level contours have also been prepared showing\ncontours of equal flood heights throughout the study area. This data is provided digitally and\ncan be overlaid on base mapping such as aerial photos and cadastral plans showing\nproperty boundaries.\n\nAll flood model results have been provided to Council for incorporation into their GIS\ncomputer system. Much of this information is also included as A4 sized plans included in\nAppendix A.\n\nIt is intended to develop a database of properties that are at risk of being affected by\nflooding as part of the floodplain management study, which is the next phase of the\ninvestigations. This will define the problem areas within the catchment and allow an\nassessment of potential flood mitigation options.", "num_resources": 1, "num_tags": 3, "organization": {"id": "87dd8c0c-af2f-40df-b356-9efc8ea0f5f4", "name": "canterbury-bankstown-council-datansw", "title": "Canterbury-Bankstown Council", "type": "organization", "description": "A\u202fnew City of Canterbury Bankstown\u202fwas announced by the NSW Government on\u202f12 May 2016.\u202f The City of Canterbury Bankstown replaces the Bankstown and Canterbury Councils, and becomes the largest Council in NSW with 350,000 residents, and is in Sydney's south west.\r\n\r\nhttps://www.cbcity.nsw.gov.au/\r\n\r\nCouncil has a chapter in the Development Control Plan (DCP) - Part B12 - which deals specifically with Flood Risk Management in the Local Government Area. Part B12 of the DCP supports the Local Environmental Plan for Bankstown by providing additional objectives and development standards to control the development of flood prone land in the City.  https://www.cbcity.nsw.gov.au/environment/rivers-creeks/floodplain-management\r\n", "image_url": "", "created": "2025-06-24T06:09:48.396407", "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-east-hills-stormwater-catchment-flood-study-report", "title": "DataNSW"}, "original_name": "nsw-fdp-east-hills-stormwater-catchment-flood-study-report", "owner_org": "87dd8c0c-af2f-40df-b356-9efc8ea0f5f4", "private": false, "promotion_level": "0", "remote_last_updated": "2026-01-20 04:37:13.709691", "spatial": "{\"type\": \"Point\",\"coordinates\": [147.0179,-32.1618]}", "spatial_coverage": "New South Wales (NSW81093)", "state": "active", "temporal_coverage_from": "2025-12-17 02:18:58.182983", "temporal_coverage_to": "2009-12-01 00:00:00", "title": "East Hills Stormwater Catchment Flood Study", "type": "dataset", "unpublished": false, "url": null, "version": null, "extras": [{"key": "harvest_object_id", "value": "73d1ad89-2f75-4a7a-9462-700e3dfb94e2"}, {"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": "2026-01-20T04:37:13.745162", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "format": "HTML", "hash": "", "id": "87531305-c0fd-48bd-8218-649cdbc327e7", "last_modified": null, "metadata_modified": "2026-03-01T20:26:08.420575", "mimetype": null, "mimetype_inner": null, "name": "East Hills - Stormwater Catchment Flood Study", "package_id": "c9a75df8-e8da-4a33-aeb4-dbe41051b95c", "position": 0, "resource_type": null, "size": null, "state": "active", "url": "https://flooddata.ses.nsw.gov.au/dataset/f6f5cd85-2190-4c48-9762-448b7775d718/resource/fd61648f-bffe-41fe-b30a-76861e39ff0e", "url_type": null, "zip_extract": false}], "tags": [{"display_name": "East Hills", "id": "29bf09b2-1392-4cb9-9752-a9d9afd400a2", "name": "East Hills", "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": []}}