Geodetic On-Line Access (GOLA)

    Please provide marks status feedback via SLIP Geodetic portal button ...


      Mark Details (GOLA last updated on 20-Apr-2026)
      Download details of all points Frequently Asked Questions
      Download graphic summaries of all points

    View the graphic summary
    SSM     PINJARRA 71
    Alternate names : Map ref.: PINJARRA SI50-2
    APREF/NGCA codes: Database number : 101994
    Stamp name:      PIN71 Date established :   
    Physical status : located (MHR Surveyors) Phys. status date :  31/03/2017
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 55 37.04940Easting (m) :   397866.445
    Longitude :  E 115 54 27.37748Northing (m) :  6356281.157
    Convergence :       -0 35 37.84
    Point scale factor : 0.99972862
    Coordinate date :       04/06/2020
    Horizontal method :   Geodetic-TerrestrialCadastral connection : No
    Relative horiz. accuracy :       50ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.044 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.049
    Semi-minor axis (m) : 0.035
    Azimuth of semi-major axis (deg) : 87 13 5
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58505.455
    Northing (m) :  255352.331
    Convergence :       0 2 57.95
    Point scale factor : 0.99999995

    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         41.928Height date :          04/05/2000
    Established by :  Dept of Land Admin.State :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA2020 ellipsoidal height (m) : 11.342N-Value (m) :          -30.586
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic

    Mark to hatch cover :  
    Mark to ground level : 

    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           39 37 7Type :   True azimuth
    Distance (m) :    4.918Type :   Horizontal
    Height diff. (m) : 0.002Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM2 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           104 58 7Type :   True azimuth
    Distance (m) :    3.775Type :   Horizontal
    Height diff. (m) : -0.101Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM3 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           241 47 7Type :   True azimuth
    Distance (m) :    3.868Type :   Horizontal
    Height diff. (m) : -0.351Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM4 Phys. status : Date :   
    Phys. type :    unknownSet in : unknown
    Azimuth :           40 4 7Type :   True azimuth
    Distance (m) :    15.800Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None

    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 55 36.92643Easting (m) :   397869.540
    Longitude :  E 115 54 27.49819Northing (m) :  6356284.976
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58508.595
    Northing (m) :  255356.117
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.930

    RM2
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 55 37.08105Easting (m) :   397870.100
    Longitude :  E 115 54 27.51785Northing (m) :  6356280.220
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58509.101
    Northing (m) :  255351.353
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.827

    RM3
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 55 37.10876Easting (m) :   397863.056
    Longitude :  E 115 54 27.24629Northing (m) :  6356279.293
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58502.045
    Northing (m) :  255350.505
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.577

    RM4
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 55 36.65691Easting (m) :   397876.487
    Longitude :  E 115 54 27.76895Northing (m) :  6356293.349
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58515.636
    Northing (m) :  255364.414
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    Cadastral Connection Fieldbooks
    No Fieldbooks for this mark

    Special Notes
    No Special Notes for this mark

    ATRF 2014
    GDA2020 coordinates are equivalent to ATRF2014@2020.0. ATRF2014 coordinates can be determined by application of the Australian Plate Motion Model. For general and technical information on GDA2020 see http://www.icsm.gov.au/gda2020 and ATRF2014 see http://www.icsm.gov.au/australian-terrestrial-reference-frame.

    View the graphic summary
    SSM     PINJARRA 71
    Alternate names : Map ref.: PINJARRA SI50-2
    APREF/NGCA codes: Database number : 101994
    Stamp name:      PIN71 Date established :   
    Physical status : located (MHR Surveyors) Phys. status date :  31/03/2017
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 55 37.09797Easting (m) :   397865.429
    Longitude :  E 115 54 27.33777Northing (m) :  6356279.650
    Convergence :       -0 35 37.86
    Point scale factor : 0.99972862
    Coordinate date :       05/05/2000
    Horizontal method :   Geodetic-TerrestrialCadastral connection : No
    Relative horiz. accuracy :       15ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.039 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.044
    Semi-minor axis (m) : 0.033
    Azimuth of semi-major axis (deg) : 81 0 0
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58504.422
    Northing (m) :  155350.836
    Convergence :       0 2 57.93
    Point scale factor : 0.99999995

    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         41.928Height date :          04/05/2000
    Established by :  Dept of Land Admin.State :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA94 ellipsoidal height (m) : 11.409N-Value (m) :          -30.519
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic

    Mark to hatch cover :  
    Mark to ground level : 

    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           39 37 7Type :   True azimuth
    Distance (m) :    4.918Type :   Horizontal
    Height diff. (m) : 0.002Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM2 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           104 58 7Type :   True azimuth
    Distance (m) :    3.775Type :   Horizontal
    Height diff. (m) : -0.101Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM3 Phys. status : established Date :   01/10/1978
    Phys. type :    spikeSet in : concrete
    Azimuth :           241 47 7Type :   True azimuth
    Distance (m) :    3.868Type :   Horizontal
    Height diff. (m) : -0.351Type :   Spirit Levelling
    RM to GL (m) :   0.200
    RM4 Phys. status : Date :   
    Phys. type :    unknownSet in : unknown
    Azimuth :           40 4 7Type :   True azimuth
    Distance (m) :    15.800Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None

    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 55 36.97500Easting (m) :   397868.525
    Longitude :  E 115 54 27.45848Northing (m) :  6356283.470
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58507.562
    Northing (m) :  155354.621
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.930

    RM2
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 55 37.12962Easting (m) :   397869.085
    Longitude :  E 115 54 27.47814Northing (m) :  6356278.713
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58508.068
    Northing (m) :  155349.858
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.827

    RM3
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 55 37.15733Easting (m) :   397862.040
    Longitude :  E 115 54 27.20658Northing (m) :  6356277.787
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58501.012
    Northing (m) :  155349.010
    Height Information
    Vertical datum :   AHD71
    Height (m) :         41.577

    RM4
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 55 36.70548Easting (m) :   397875.471
    Longitude :  E 115 54 27.72924Northing (m) :  6356291.843
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58514.603
    Northing (m) :  155362.918
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    Cadastral Connection Fieldbooks
    No Fieldbooks for this mark

    Special Notes
    No Special Notes for this mark