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    SSM     COOMALLO
    Alternate names : Map ref.: HILL RIVER SH50-9
    APREF/NGCA codes: 95WFDatabase number : 100464
    Stamp name:      Date established :   01/01/1942
    Physical status : destroyed (McMullen Nolan Group)Phys. status date :  24/02/2022
    Physical type :    brass plaqueHatch cover type : unknown
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 30 09 28.19553Easting (m) :   345357.949
    Longitude :  E 115 23 39.04813Northing (m) :  6662636.485
    Convergence :       -0 48 24.83
    Point scale factor : 0.99989504
    Coordinate date :       22/11/2021
    Horizontal method :   Geoscience Australia NGCACadastral connection : Exists
    Relative horiz. accuracy :       5ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.016 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.016
    Semi-minor axis (m) : 0.015
    Azimuth of semi-major axis (deg) : 4 58 41
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         300.622Height date :          19/12/2007
    Established by :  unknownState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA2020 ellipsoidal height (m) : 270.794N-Value (m) :          -29.828
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         270.797Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.026m
    Mark to hatch cover :  
    Mark to ground level : 0.046
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : located (Hille Thompson & Delfos) Date :   18/07/2001
    Phys. type :    spikeSet in : concrete collar
    Azimuth :           181 24 46Type :   True azimuth
    Distance (m) :    6.087Type :   Horizontal
    Height diff. (m) : -0.351Type :   Spirit Levelling
    RM to GL (m) :   None
    RM2 Phys. status : located (Hille Thompson & Delfos) Date :   18/07/2001
    Phys. type :    spikeSet in : concrete collar
    Azimuth :           263 26 41Type :   True azimuth
    Distance (m) :    6.110Type :   Horizontal
    Height diff. (m) : -0.669Type :   Spirit Levelling
    RM to GL (m) :   None
    RM3 Phys. status : located (Hille Thompson & Delfos) Date :   11/02/2016
    Phys. type :    star iron picketSet in : ground
    Azimuth :           305 51 56Type :   True azimuth
    Distance (m) :    10.540Type :   Horizontal
    Height diff. (m) : -1.531Type :   Spirit Levelling
    RM to GL (m) :   None
    RM4 Phys. status : located (Hille Thompson & Delfos) Date :   11/02/2016
    Phys. type :    star iron picketSet in : ground
    Azimuth :           51 30 36Type :   True azimuth
    Distance (m) :    5.664Type :   Horizontal
    Height diff. (m) : -0.053Type :   Spirit Levelling
    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 30 09 28.39314Easting (m) :   345357.884
    Longitude :  E 115 23 39.04252Northing (m) :  6662630.399
    Height Information
    Vertical datum :   AHD71
    Height (m) :         300.271
    RM2
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 30 09 28.21818Easting (m) :   345351.890
    Longitude :  E 115 23 38.82129Northing (m) :  6662635.702
    Height Information
    Vertical datum :   AHD71
    Height (m) :         299.953
    RM3
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 30 09 27.99499Easting (m) :   345349.322
    Longitude :  E 115 23 38.72893Northing (m) :  6662642.539
    Height Information
    Vertical datum :   AHD71
    Height (m) :         299.091
    RM4
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 30 09 28.08105Easting (m) :   345362.332
    Longitude :  E 115 23 39.21380Northing (m) :  6662640.072
    Height Information
    Vertical datum :   AHD71
    Height (m) :         300.569
    Cadastral Connection Fieldbooks
    A.WYLLIE 20
    DOLA FB 72918
    LG 135703
    Special Notes
    Unknown DateGM is on a small rocky ridge, the highest point in the vicinity. Contact R KERR (08) 9652 1250 (NOV 1998) Owner does not live on site.
    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     COOMALLO
    Alternate names : Map ref.: HILL RIVER SH50-9
    APREF/NGCA codes: 95WFDatabase number : 100464
    Stamp name:      Date established :   01/01/1942
    Physical status : destroyed (McMullen Nolan Group)Phys. status date :  24/02/2022
    Physical type :    brass plaqueHatch cover type : unknown
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 30 09 28.24324Easting (m) :   345356.873
    Longitude :  E 115 23 39.00713Northing (m) :  6662635.001
    Convergence :       -0 48 24.86
    Point scale factor : 0.99989504
    Coordinate date :       05/05/2000
    Horizontal method :   Geodetic-TerrestrialCadastral connection : Exists
    Relative horiz. accuracy :       5ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.033 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.037
    Semi-minor axis (m) : 0.029
    Azimuth of semi-major axis (deg) : 99 0 0
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         300.622Height date :          19/12/2007
    Established by :  unknownState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA94 ellipsoidal height (m) : 270.854N-Value (m) :          -29.768
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         270.797Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.026m
    Mark to hatch cover :  
    Mark to ground level : 0.046
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : located (Hille Thompson & Delfos) Date :   18/07/2001
    Phys. type :    spikeSet in : concrete collar
    Azimuth :           181 24 46Type :   True azimuth
    Distance (m) :    6.087Type :   Horizontal
    Height diff. (m) : -0.351Type :   Spirit Levelling
    RM to GL (m) :   None
    RM2 Phys. status : located (Hille Thompson & Delfos) Date :   18/07/2001
    Phys. type :    spikeSet in : concrete collar
    Azimuth :           263 26 41Type :   True azimuth
    Distance (m) :    6.110Type :   Horizontal
    Height diff. (m) : -0.669Type :   Spirit Levelling
    RM to GL (m) :   None
    RM3 Phys. status : located (Hille Thompson & Delfos) Date :   11/02/2016
    Phys. type :    star iron picketSet in : ground
    Azimuth :           305 51 56Type :   True azimuth
    Distance (m) :    10.540Type :   Horizontal
    Height diff. (m) : -1.531Type :   Spirit Levelling
    RM to GL (m) :   None
    RM4 Phys. status : located (Hille Thompson & Delfos) Date :   11/02/2016
    Phys. type :    star iron picketSet in : ground
    Azimuth :           51 30 36Type :   True azimuth
    Distance (m) :    5.664Type :   Horizontal
    Height diff. (m) : -0.053Type :   Spirit Levelling
    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 30 09 28.44085Easting (m) :   345356.808
    Longitude :  E 115 23 39.00152Northing (m) :  6662628.915
    Height Information
    Vertical datum :   AHD71
    Height (m) :         300.271
    RM2
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 30 09 28.26589Easting (m) :   345350.814
    Longitude :  E 115 23 38.78029Northing (m) :  6662634.218
    Height Information
    Vertical datum :   AHD71
    Height (m) :         299.953
    RM3
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 30 09 28.04270Easting (m) :   345348.246
    Longitude :  E 115 23 38.68793Northing (m) :  6662641.055
    Height Information
    Vertical datum :   AHD71
    Height (m) :         299.091
    RM4
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 30 09 28.12876Easting (m) :   345361.255
    Longitude :  E 115 23 39.17280Northing (m) :  6662638.588
    Height Information
    Vertical datum :   AHD71
    Height (m) :         300.569
    Cadastral Connection Fieldbooks
    A.WYLLIE 20
    DOLA FB 72918
    LG 135703
    Special Notes
    Unknown DateGM is on a small rocky ridge, the highest point in the vicinity. Contact R KERR (08) 9652 1250 (NOV 1998) Owner does not live on site.