Data

Hydrologically Enforced Digital Elevation Model (HDEM) 5 Metre Grid derived from LiDAR

Geoscience Australia
Geoscience Australia
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/104740&rft.title=Hydrologically Enforced Digital Elevation Model (HDEM) 5 Metre Grid derived from LiDAR&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/104740&rft.description=As part of the Urban Digital Elevation Modelling (UDEM) Project (July 2008- June 2010), Airborne LiDAR data were acquired in partnership with State jurisdictions over priority areas including Perth-Bunbury, Adelaide, Brisbane and the Gold Coast, Melbourne, Sydney and the NSW Hunter and Central Coast. These datasets were then further processed to produce hydrologically enforced and conditioned DEMs (Hydro-DEMs).Maintenance and Update Frequency: notPlannedStatement: Hydro-DEMs have been generated for this project by processing raw LiDAR point clouds. In their raw state there is too much noise originating from minor discrepancies caused by the uncertainty of the originating return signal, for example whether the return has bounced off the top of kerb, bottom of kerb, a tussock or a puddle or by pure LiDAR system limitations. Due to this noise and/or the high accuracy of the data model, even minor anomalies or puddles obstruct water flow modelling.&rft.creator=Geoscience Australia &rft.date=2017&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / MGA zone 53 (EPSG:28353)&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / MGA zone 53 (EPSG:28353)&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=elevation&rft_subject=LiDAR&rft_subject=HDEM&rft_subject=EARTH SCIENCES&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

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

WWW:LINK-1.0-http--link

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Brief description

As part of the Urban Digital Elevation Modelling (UDEM) Project (July 2008- June 2010), Airborne LiDAR data were acquired in partnership with State jurisdictions over priority areas including Perth-Bunbury, Adelaide, Brisbane and the Gold Coast, Melbourne, Sydney and the NSW Hunter and Central Coast. These datasets were then further processed to produce hydrologically enforced and conditioned DEMs (Hydro-DEMs).

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Maintenance and Update Frequency: notPlanned
Statement: Hydro-DEMs have been generated for this project by processing raw LiDAR point clouds. In their raw state there is too much noise originating from minor discrepancies caused by the uncertainty of the originating return signal, for example whether the return has bounced off the top of kerb, bottom of kerb, a tussock or a puddle or by pure LiDAR system limitations. Due to this noise and/or the high accuracy of the data model, even minor anomalies or puddles obstruct water flow modelling.

Created: 20 03 2017

Issued: 21 04 2020

Data time period: 2007 to 2010

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154,-9 154,-44 112,-44 112,-9 154,-9

133,-26.5

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-9; projection=GDA94 / MGA zone 53 (EPSG:28353)

Subjects
EARTH SCIENCES | HDEM | LiDAR | Published_External | elevation |

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Other Information
Adelaide HDEM (tif) [48.7 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/AdelaideHDEM2009_5m.zip

Brisbane HDEM (tif) [162.5 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/BrisbaneHDEM2009_5m.zip

Gold Coast HDEM (tif) [134.2 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/GoldCoastHDEM2009_5m.zip

Hunter Coast HDEM (tif) [127.6 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/HunterCoastHDEM2007_5m.zip

Melbourne East HDEM (tif) [799.6 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/MelbourneEast_5m.zip

Melbourne West HDEM (tif) [162.8 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/MelbourneWestHDEM2007_5m.zip

Swan Coast HDEM (tif) [195.8 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/SwanCoastHDEM2008_5m.zip

Sydney HDEM (tif) [67.6 MB]

uri : https://d28rz98at9flks.cloudfront.net/104740/SydneyHDEM2008_5m.zip

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