Georges River (Sydney Region) Digital Elevation Model  


Authors / CoAuthors

Weales, J. | Coghlan, R.

Abstract

<div>The Georges River (Sydney Region) 5m Digital Elevation Model (DEM) is generated from all relevant data available on the Elvis - Elevation and Depth - Foundation Spatial Data (Elvis) platform with a resolution of 5 Metres or higher. Source datasets with a resolution higher than 5m have been resampled to 5m.</div><div>This elevation model is generated from a total of 989 datasets sourced from multiple providers including State and Territory Governments. The capture dates for input data range from 2011/02/26 - 2021/06/05. See Table 1 below for further information. The area covers the land mass of the Georges River (Sydney Region) drainage basin as defined by the Bureau of Meteorology Geofabric.</div>

Product Type

dataset

eCat Id

149688

Contact for the resource

  Resource provider

 

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

  Point of contact

 

Digital Object Identifier

https://dx.doi.org/10.26186/149688

Keywords

( Project )
  • catchment
( Project )
  • dem
( Project )
  • elevation
( Project )
  • Georges
( Project )
  • Sydney
  • Elevation
  • flood
  • DEM
theme.ANZRC Fields of Research.rdf
  • Earth and space science informatics
  • Published_External

Publication Date

2024-07-12T00:42:11

Creation Date

2024-06-20T02:00:00

Security Constraints

Australian Government Security Classification System    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Use - license otherRestrictions

Status

completed

Purpose

Provide a single elevation dataset for the Georges River (Sydney Region) catchment.

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

<div>A 10m buffer was applied to the extent of the drainage basin to ensure overlap with neighbouring basins.&nbsp;Datasets available in the Elvis platform that intersected the buffered basin area were downloaded.&nbsp;Where multiple datasets overlapped, the cell value from the most recently captured data was used. As required, individual tiles were resampled to 5m resolution, reprojected to GDA2020 and aligned to the whole 5m grid value to ensure cell alignment between datasets. Bilinear resampling method was used for each of these steps. Tiles were then mosaicked to form a single raster output. In some areas small holes were present in the mosaicked product due to the input tiles not aligning or overlapping completely. Data gaps less than or equal to 15m (3 cells) were filled by interpolation. Cells within larger data gaps were assigned “no data” values in the output mosaic. </div><div>Near shore bathymetry has not been included in the dataset due to insufficient coverage.</div>

Parent Information

Extents

[-34.00, -34.00, 151.00, 151.00]

Reference System

GDA2020 / MGA zone 56 / projected (EPSG: 7856)

Spatial Resolution

Service Information

Associations

Downloads and Links

Link to the Elevation Information System (ELVIS)  

Download Metadata Statement (pdf) [1.0 MB]  

Download DEM Metadata (zip) [2.0 MB]  

Source Information