Very High Resolution Airborne Lidar at Strathalbyn in Queensland, Australia

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OT Collection ID: OT.052018.28355.1
OT Collection Name: Very High Resolution Airborne Lidar at Strathalbyn in Queensland, Australia
Short Name: AU17Strathalbyn
Collection Platform: Airborne Lidar
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    Point Cloud Data   Bulk Download     opentopoID: OTLAS.052018.28355.1
    Collection Overview: ARA logoNESP logo

    An area of severe erosion on the Strathalbyn property near the Burdekin River in North Queensland was captured by ARA - Airborne Research Australia on 5 Sep 2017 using a Riegl Q680i-S Lidar (1064nm) mounted on one of ARA's research motorgliders. The aim was to test what the highest achievable resolution of such airborne lidar would be by flying several overlapping grids with narrow linespacing (50m and 100m) at 250m AGL. Achieved point densities are between 100 and 200 points per sqm. 8cm pixel size aerial RGB imagery is also available.

    The data consist of two sites (Site 1 and Site 2) which are 0.767sqkm and 2.297sqkm in size, respectively.

    The project is a collaboration between the Australian NESP (National Environmental Science Program) Project 3.1.7 "Gully rehabilitation" ( and ARA who also jointly funded the data capture and processing.

    It is important to understand that due to the nature of the terrain and the much higher point densities achieved, standard point classification will not yield the desired results in a perfect manner. Research on this data set is ongoing at the two partner organizations. Third Party users of this data set are encouraged to contact the project team via

    Dataset Acknowledgement: N/A - Acknowledgement Guidance

    Dataset Citation: NESP (2018): Very High Resolution Airborne Lidar of Erosion Gullies at Strathalbyn in Queensland, Australia. National Environmental Science Program, Australia, and Airborne Research Australia. Distributed by OpenTopography. Accessed: 2023-03-27

    Use License: Not Provided

    Dataset Keywords: erosion, very high point density, airborne lidar, riegl q680i-s, queensland, australia

    Survey Date: 09/05/2017

    Publication Date: 05/08/2018
    Total number of points: 459,842,944 pts

    Area: 4.2 km2

    Point Density: 109.49 pts/m2

        Class 1 - Unclassified1,227,668
        Class 2 - Ground374,202,088
        Class 3 - Low Vegetation11,337,807
        Class 4 - Medium Vegetation23,559,907
        Class 5 - High Vegetation49,515,474

    Coordinate System:
        Horizontal: Geocentric Datum of Australia 1994(GDA94)/Map Grid of Australia z55 (MGA55) [EPSG: 28355]
        Vertical: Australian Height Datum (AHD) 2009 [EPSG: 5111]

    Units: meter

    Survey Report: N/A

    LAS Validation Data Report: AU17Strathalbyn.html
    Tile index in shapefile format: Download

    Dataset Extent in KMZ format: Download

    Dataset Spatial Bounds: North: -20.1832101774266°     South: -20.2140625474243°     East: 147.33868500501°     West: 147.317382531968°