Authors / CoAuthors
Weales, J. | Coghlan, R.
Abstract
<div>The Karuah River 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 1264 datasets sourced from multiple providers including State and Territory Governments. The capture dates for input data range from 17/08/2012 – 25/07/2018 See Table 1 below for further information.</div><div>The area covers the land mass of the Karuah River drainage basin as defined by the Bureau of Meteorology Geofabric. Near shore bathymetry data has also been included in the final raster.</div>
Product Type
dataset
eCat Id
149920
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Digital Object Identifier
Keywords
- ( Project )
-
- catchment
- ( Project )
-
- DEM
- ( Project )
-
- elevation
- ( Project )
-
- Karuah
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- Elevation
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- flood
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- DEM
- theme.ANZRC Fields of Research.rdf
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- Earth and space science informatics
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- Published_External
Publication Date
2024-11-05T22:54:47
Creation Date
2024-11-03T07:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
The provide a single elevation dataset for the Karuah River 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. Datasets available in the Elvis platform that intersected the buffered basin area were downloaded. 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 datasets were downloaded from the Elvis platform and mosaicked into a single bathymetry raster. The bathymetry and terrestrial area outputs were then mosaicked to form a single product covering both the terrestrial area and near shore bathymetry. In instances of overlap between the two, cell values from the terrestrial dataset were used in the resulting DEM.</div><div>Large waterbodies with incomplete coverage have been removed from the dataset.</div>
Parent Information
Extents
[-32.85, -31.96, 151.65, 152.62]
Reference System
GDA2020 / MGA zone 56 / projected (EPSG: 7856)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information