Digital Elevation Model (DEM) for bathymetry of areas of interest around Australia. These models have a 30m-resolution. <b>Value: </b>Bathymetry mapping of the seafloor is vital for the protection of the coastal region, allowing for the safe navigation of shipping and improved environmental management. <b>Scope: </b>Areas include: Northern Australia, Great Barrier Reef, and Bass Strait.

The Murray Darling Basin Elevation Project (MDBEP) data covers the areas of the Murray Floodplain (Wakool and Edward Rivers) and Darling catchment areas (Balonne, Barwon, Bokhara, Boomi, Culgoa, Gwydir, Namoi, Macintyre, Macquarie, Mooni and Narran rivers).

Aerometrex - Adelaide was contracted by Department for Environment and Heritage to capture data along the Murray River from Lock 1 to Wellington

This dataset contains bathymetry (depth) products from the compilation of all available source bathymetry data within Northern Australia into a 30 m-resolution Digital Elevation Model (DEM). The Northern Australia region includes a broad continental shelf over 400 km wide extending out from Western Australia and the Northern Territory, and stretching over a distance of ~1500 km. This region encompasses numerous shallow coral reefs including the offshore Sahul Banks, sand cays, drowned ancient river valleys, broad inner-shelf banks and a rugged coastline. Bathymetry mapping of the seafloor is vital for the protection of Northern Australia, allowing for the safe navigation of shipping and improved environmental management. Shallow- and deep-water multibeam surveys have revealed the highly complex seafloor of the continental shelf and adjacent slope canyons draining into the Indian Ocean and Timor Sea. Airborne LiDAR bathymetry acquired by the Australian Hydrographic Office cover most of the Sahul Banks reefs, with some coverage gaps supplemented by satellite derived bathymetry. The Geoscience Australia-developed Intertidal Elevation Model DEM improves the source data gap along Northern Australia’s vast intertidal zone. All source bathymetry data were extensively edited as point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum.

Fugro Spatial Solutions (FSS) was contracted September 21st 2007 to provide LiDAR data products over the Goulburn Broken area.

<p>Development of floodplains in the western rural areas of NSW is managed through Part 8 of the Water Act 1912. Part 8 was gazetted in 1984 and makes provisions concerning 'flood control works' that affect, or are likely to affect, flooding or floodplain functions. Part 8 was amended in 1999 to allow for more strategic control of flood control works through the preparation of rural Floodplain Management Plans (FMPs) and a more streamlined and resource efficient approval process. The amendments also required that rural FMPs be developed in accordance with the provisions and policies of the operative NSW Manual (currently, Floodplain Development Manual, NSW Government, 2005). <p>The manual supports the primary objective of the New South Wales Government's Flood Prone Land Policy to reduce the impact of flooding and flood liability on individual owners and occupiers of flood prone property, and to reduce private and public losses resulting from floods, utilising ecologically positive methods wherever possible. The formulation and implementation of FMPs is the cornerstone of the policy and the process for their preparation is described in the manual. <p>Administrative orders published in April 2007, inter alia, divided the responsibilities under Part 8 of the Water Act 1912 between the Department of Environment and Climate Change (preparing rural FMPs) and the Department of Water and Energy (implementing the plans through licensing and compliance functions). <p>On 1 July 2009, following a Reorganisation of Government Agencies, the licensing and compliance functions regarding Part 8 were transferred to the newly established Office of Water within the renamed Department of Environment, Climate Change and Water (DECCW). Please note that any reference in this document to the Department of Environment and Climate Change, and Department of Water and Energy, is to be construed as a reference to DECCW. <p>The development of a rural FMP progresses through three (3) key stages: Data Collection & Flood Study (FS) - in general, includes data collection for hydrology, hydraulic and environmental aspects; defines the nature and extent of flooding, including development of a computer-based hydraulic model of flood behaviour; Floodplain Risk Management Study (FRMS)- in general evaluates management options based on hydraulic modelling, analysis of the floodplain environment and social and economic considerations, to address existing and future floodplain risk management issues; and Floodplain Management Plan (FMP) - presents the recommended management measures for the floodplain, as determined in the Floodplain Risk Management Study, and includes an implementation program with priorities. <p>This current project, overseen by the Darling River Floodplain (Bogan River confluence to Louth) Floodplain Management Committee (the Committee) and prepared for DECCW, includes only the first of the above three elements of the Floodplain Management Plan process, and is structured as follows: <p>Stage 1: Data Compendium and Digital Terrain Model <p>All information and knowledge of the flood regime in the study area are included in a Compendium of Data (COD), as a permanent record, and for later use in Stage 2 of the FS. <p>A Digital Terrain Model was prepared for hydraulic modelling use in Stage 2 of the FS and the results presented on an appropriate Geographic Information System (GIS). <p>Stage 2: Calibrated Hydraulic Model and Final Flood Study Report <p>A calibrated computer based hydraulic model was developed to quantify the distribution of floodwaters during historical flood events and for later use in designing a floodway network (as part of the FRMS) in order to evaluate management options. <p>The Compendium of Data was completed in July 2008. This Report covers Stage 2: Calibrated Hydraulic Model and Final Flood Study Report. <p>The Commonwealth Government's Natural Disaster Mitigation Program (NDMP) and the New South Wales State Government through the NSW State Emergency Management Committee (SEMC) have jointly provided funding for the project.

This dataset contains bathymetry (depth) products from the compilation of all available source bathymetry data within the Great Barrier Reef into a 30 m-resolution Digital Elevation Model (DEM). The Great Barrier Reef (GBR) is the largest coral reef ecosystem on Earth and stretches over 2500 km along the north-eastern Australia margin. Bathymetry mapping of this extensive reef system is vital for the protection of the GBR allowing for the safe navigation of shipping and improved environmental management. Over the past ten years, deep-water multibeam surveys have revealed the highly complex shelf-edge drowned reefs and continental slope canyons. Airborne LiDAR bathymetry acquired by the Australian Hydrographic Service cover most of the GBR reefs, with coverage gaps supplemented by satellite derived bathymetry. The Geoscience Australia-developed Intertidal Elevation Model DEM improves the source data gap along Australia’s vast intertidal zone. All source bathymetry data were extensively edited as point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum. The High-resolution depth model for the Great Barrier Reef - 30 m (Version 10 Nov 2020) can be downloaded as four separate but overlapping grids, with the area coverage: Great Barrier Reef A 2020 30m 10-17°S 143-147°E Great Barrier Reef B 2020 30m 16-23°S 144-149°E Great Barrier Reef C 2020 30m 18-24°S 148-154°E Great Barrier Reef D 2020 30m 23-29°S 150-156°E There is an updated “Torres Strait Bathymetry 30m 2020 - A High-resolution Depth Model (20200021C)” and can be downloaded at: <a href="http://pid.geoscience.gov.au/dataset/ga/144348">http://pid.geoscience.gov.au/dataset/ga/144348</a> It includes a grid with an area coverage: 8 – 13°S and 139 – 146°E This dataset is not to be used for navigational purposes.

The data covers an area of approximately 8500 sq km in the Darling river catchment area, located between Bourke, NSW and Wilcannia, NSW. A set of seamless products were produced including hydro-flattened bare earth DEMs, DSMs, Canopy Height Models (CHM) and Foliage Cover Models (FCM). The outputs of the project are compliant with National ICSM LiDAR Product Specifications and the NEDF.

The AusBathyTopo 250m (Australia) 2023 Grid is a high-resolution depth model for Australia that replaces the Australian Bathymetry and Topography Grid, June 2009. This publication is the result of a collaborative partnership between Geoscience Australia, the Australian Hydrographic Office, James Cook University, and the University of Sydney. It has been compiled using 1582 unique data sources from multibeam echosounders, single-beam echosounders, LiDAR, 3D seismic first returns, Electronic Navigation Charts and satellite derived bathymetry alongside higher-resolution regional compilations. In particular, the map incorporates new innovations such as the use of earth observation data (satellite based) produced by Digital Earth Australia to improve shallow coastal depth modelling to present a seamless transition between land and sea. All source bathymetry data were extensively edited as 3D point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum. This new continental-scale grid represents decades of data collection, analysis, investment and collaboration from Australia’s seabed mapping community and is a significant improvement on the 2009 compilation. The data extends across a vast area from 92°E to 172° E and 8°S to 60° S. This includes areas adjacent to the Australian continent and Tasmania, and surrounding Macquarie Island and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands. Australia's marine jurisdiction offshore from the territory of Heard and McDonald Islands and the Australian Antarctic Territory are not included. We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research. The datasets used were collected by the Marine National Facility on 43 voyages (see Lineage for identification). This dataset is not to be used for navigational purposes.

The data covers an area of approximately 17000 sq km in the Condamine- Culgoa catchment area, located between St George, QLD and Brewarrina, NSW. A set of seamless products were produced including hydro-flattened bare earth DEMs, DSMs, Canopy Height Models (CHM) and Foliage Cover Models (FCM). The outputs of the project are compliant with National ICSM LiDAR Product Specifications and the NEDF.