SRTM-derived 1 Second Digital Elevation Models Version 1.0

Note: Geoscience Australia no longer supports users' external hard drives. The data can either be downloaded from the ELVIS Portal or from the Related links.

The 1 second Shuttle Radar Topography Mission (SRTM) Digital Elevation Models Version 1.0 package comprises three surface models: the Digital Elevation Model (DEM), the Smoothed Digital Elevation Model (DEM-S) and the Hydrologically Enforced Digital Elevation Model (DEM-H). The DEMs were derived from the SRTM data acquired by NASA in February 2000 and were publicly released under Creative Commons licensing from November 2011 in ESRI Grid format.

DEM represents ground surface topography, with vegetation features removed using an automatic process supported by several vegetation maps. This provides substantial improvements in the quality and consistency of the data relative to the original SRTM data, but is not free from artefacts. Man-made structures such as urban areas and power line towers have not been treated. The removal of vegetation effects has produced satisfactory results over most of the continent and areas with defects identified in supplementary layers distributed with the data, and described in the User Guide.

DEM-S represents ground surface topography, excluding vegetation features, and has been smoothed to reduce noise and improve the representation of surface shape. An adaptive smoothing process applied more smoothing in flatter areas than hilly areas, and more smoothing in noisier areas than in less noisy areas. This DEM-S supports calculation of local terrain shape attributes such as slope, aspect and curvature that could not be reliably derived from the unsmoothed 1 second DEM because of noise.

DEM-H is a hydrologically enforced version of the smoothed DEM-S. The DEM-H captures flow paths based on SRTM elevations and mapped stream lines, and supports delineation of catchments and related hydrological attributes. The dataset was derived from the 1 second smoothed Digital Elevation Model (DEM-S) by enforcing hydrological connectivity with the ANUDEM software, using selected AusHydro V1.6 (February 2010) 1:250,000 scale watercourse lines and lines derived from DEM-S to define the watercourses. The drainage enforcement has produced a consistent representation of hydrological connectivity with some elevation artefacts resulting from the drainage enforcement.

Further information can be found in the supplementary layers supplied with the data and in the User Guide.

Identification info

Date (Publication): 2011-01-01T00:00:00

Date (Revision): 2019-09-16T00:54:41

Edition: 1.0

Edition date: 2000-01-01T00:00:00

Citation identifier: Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/72759

Cited responsible party

Role	Organisation / Individual Name	Details
Author	Gallant, J.	1
Author	Wilson, N.	2
Author	Dowling, T.	3
Author	Read, A.	4
Author	Inskeep, C.	5

Issue identification: 1

Point of contact

Role	Organisation / Individual Name	Details
Owner	Commonwealth of Australia (Geoscience Australia)
Custodian	Commonwealth of Australia (Geoscience Australia)	Voice
Point of contact	Kay, R.	PSCD Internal Contact

Topic category

Elevation

Extent

Maintenance and update frequency: As needed

Resource format

Title: Product data repository: Various Formats

Protocol: FILE:DATA-DIRECTORY

Name of the resource: Data Store directory containing the digital product files

Description: Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Keywords

DEM topographic

Theme

DEM
GIS
digital elevation data
topography

Keywords

Australian and New Zealand Standard Research Classification (ANZSRC)

Topology

Keywords

Published_External

Resource constraints

Title: Creative Commons Attribution 4.0 International Licence

Alternate title: CC-BY

Edition: 4.0

Website

http://creativecommons.org/licenses/

Access constraints: License

Use constraints: License

Resource constraints

Title: Australian Government Security ClassificationSystem

Edition date: 2018-11-01T00:00:00

Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification: Unclassified

Associated resource

Association Type: Operated on by

Title: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography 2024 MapServer

Website

Associated resource

Association Type: Operated on by

Title: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography 2024 WMS

Website

Associated resource

Association Type: Operated on by

Title: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography WCS

Website

Language: English

Character encoding: UTF8

Distribution Information

Distributor contact

Role	Organisation / Individual Name	Details
Distributor	Commonwealth of Australia (Geoscience Australia)	Voice

OnLine resource: Download the DEM-H [26.9 GB]

Download the DEM-H [26.9 GB]

OnLine resource: Download the DEM-S [26.9 GB]

Download the DEM-S [26.9 GB]

OnLine resource: Download the DEM [23.5 GB]

Download the DEM [23.5 GB]

Distribution format

OnLine resource: ELVIS Data Portal

ELVIS Data Portal

OnLine resource: 1 second SRTM Derived Products User Guide

1 second SRTM Derived Products User Guide

Distribution format

OGC:WCS

Distribution format

ESRI:ArcGIS:MapServer

Distribution format

OGC:WMS

OnLine resource: Digital Elevation Model (DEM) of Australia with 1 Second Grid WCS

Digital Elevation Model (DEM) of Australia with 1 Second Grid WCS

Distribution format

OGC:WCS

OnLine resource: Digital Elevation Model (DEM) of Australia with 1 Second Grid MapServer

Digital Elevation Model (DEM) of Australia with 1 Second Grid MapServer

Distribution format

ESRI:ArcGIS:MapServer

OnLine resource: Digital Elevation Model (DEM) of Australia with 1 Second Grid WMS

Digital Elevation Model (DEM) of Australia with 1 Second Grid WMS

Distribution format

OGC:WMS

OnLine resource: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography 2024 MapServer

Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography 2024 MapServer

Distribution format

ESRI:ArcGIS:MapServer

OnLine resource: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography WCS

Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography WCS

Distribution format

OGC:WCS

OnLine resource: Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography WMS

Digital Elevation Model (DEM) Shuttle Radar Topography Mission (SRTM) 1 Second over Australian Bathymetry Topography WMS

Distribution format

OGC:WMS

Resource lineage

Statement: Unknown

Hierarchy level: Dataset

Description: Source data not available.

Reference System Information

Reference system identifier: EPSG/WGS 84 (EPSG:4326)

Metadata constraints

Title: Australian Government Security ClassificationSystem

Edition date: 2018-11-01T00:00:00

Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification: Unclassified

Metadata

Metadata identifier

urn:uuid/aac46307-fce8-449d-e044-00144fdd4fa6

Title: GeoNetwork UUID

Language: English

Character encoding: UTF8

Contact

Role	Organisation / Individual Name	Details
Point of contact	Commonwealth of Australia (Geoscience Australia)	Voice

Type of resource

Resource scope: Dataset

Name: dataset

Alternative metadata reference

Title: Geoscience Australia - short identifier for metadata record with uuid

Citation identifier: eCatId/72759

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/aac46307-fce8-449d-e044-00144fdd4fa6

Date info (Creation): 2025-05-13T05:50:12.223Z

Date info (Creation): 2025-04-11T00:08:00.277Z

Date info (Creation): 2025-04-10T05:57:03.11Z

Date info (Creation): 2025-04-10T01:17:18.046Z

Date info (Creation): 2025-04-09T02:16:57.186Z

Date info (Revision): 2025-05-13T05:50:12.223Z

Date info (Creation): 2011-08-18T00:00:00

Metadata standard

Title: AU/NZS ISO 19115-1:2014

Metadata standard

Title: ISO 19115-1:2014

Metadata standard

Title: ISO 19115-3

Title: Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition: Version 2.0, September 2018

Citation identifier: https://pid.geoscience.gov.au/dataset/ga/122551

Spatial extent

Provided by

Access to the portal

Read here the full details and access to the data.

Associated resources

Not available

Simple

Identification info

Extent

Resource format

Resource constraints

Resource constraints

Associated resource

Associated resource

Associated resource

Distribution Information

Resource lineage

Reference System Information

Metadata constraints

Metadata

Type of resource

Alternative metadata reference

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Metadata standard

Spatial extent

Keywords

Provided by

Associated resources