Mascot Geodetic Control Monuments High Precision

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Published by the Ministry of Forests, Lands, Natural Resource Operations and Rural Development - GeoBC
Licensed under Access Only

Mascot geodetic control monuments for BC. Geodetic Control Monuments contains high precision geodetic control marker information for BC. Geodetic control markers are a network of interconnected markers in the ground which have accurately determined coordinates and/or elevations. They are fixed points on which to spatially reference surveys, mapping, aerial and satellite imaging, etc.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information

Purpose

Fixed high precision points to spatially reference surveys, mapping, aerial and satellite imaging

Lineage Statement

Processed through observing existing monuments producing other monuments, and through differential GPS.

More Information

Contact Information

NameTyson Altenhoff (pointOfContact)
Emailtyson.altenhoff@gov.bc.ca
OrganizationMinistry of Forests, Lands, Natural Resource Operations and Rural Development
Sub-OrganizationGeoBC

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2014-12-11
Record Last Modified 2019-05-04
Resource Status onGoing

Object Description

Object Name: WHSE_REFERENCE.MASCOT_GEODETIC_CTRL_SP

Short Name: MSCTGDTCTR
Comments: MASCOT GEODETIC CTRL SP contains high precision geodetic control marker information for BC. Geodetic control markers are a network of interconnected markers in the ground which have accurately determined coordinates and/or elevations. They are fixed points on which to spatially reference surveys, mapping, aerial and satellite imaging, etc.

Column Name Short Name Data Type Data Precision Comments
GEODETIC_CONTROL_MARKER GDTCCNTRLM NUMBER 7 The GEODETIC CONTROL MARKER is a unique sequential number, from 1 to 999,999, with a check digit at the end, from 0 to 9, to uniquely identify a Geodetic Control Marker (GCM). This sequential number is randomly assigned as to physical location in and around the province of British Columbia. For the purposes of public users of MASCOT, a GCM is that mark, other than a monument used to mark a boundary, corner or line, set in the ground whose co-ordinate position is confirmed by the Director of Surveys. It is important to note that the GCM # may not be changed for the life of the physical marker, i.e. it is permanently associated with a given marker.
LATITUDE_DEGREES LAT_DEG NUMBER 2 The LATITUDE DEGREES is the degree component of the full geographic coordinate latitude for the GEODETIC CONTROL MARKER.
LATITUDE_MINUTES LTTDMNTS NUMBER 2 The LATITUDE MINUTES is the minutes component of the full geographic coordinate latitude for the GEODETIC CONTROL MARKER.
LATITUDE_SECONDS LAT_SEC NUMBER 8 The LATITUDE SECONDS is the seconds component of the full geographic coordinate latitude for the GEODETIC CONTROL MARKER.
LONGITUDE_DEGREES LONG_DEG NUMBER 3 The LATITUDE DEGREES is the degree component of the full geographic coordinate latitude for the GEODETIC CONTROL MARKER.
LONGITUDE_MINUTES LONG_MIN NUMBER 2 The LONGITUDE MINUTES is the minutes component of the full geographic coordinate longitude for the GEODETIC CONTROL MARKER.
LONGITUDE_SECONDS LONG_SEC NUMBER 8 The LONGITUDE SECONDS is the seconds component of the full geographic coordinate longitude for the GEODETIC CONTROL MARKER.
LATITUDE LATITUDE NUMBER 38 The LATITUDE is the full geographic coordinate latitude for the GEODETIC CONTROL MARKER.
LONGITUDE LONGITUDE NUMBER 38 The LONGITUDE is the full geographic coordinate longitude for the GEODETIC CONTROL MARKER.
SYMBOL_TYPE SYMB_TYPE NUMBER 1 The SYMBOL TYPE indicates the cartographic symbology to be used when diplaying or printing a GEODETIC CONTROL MARKER. For example, a value of 5 indicates a published GEODETIC CONTROL MARKER (Terrestrial Only).
TABLET_MARKING TABLT_MARK VARCHAR2 16 The TABLET MARKING is the Name of the GEODETIC CONTROL MARKER as stamped on the cap in the field. Under the MASCOT operational system, new markers will continue to be marked with a seven digit CSDB Identifier of the form "yyHxxxx" where "yy" is the year of installation and "xxxx" is a four digit number. It is important to note that tablet markings are not unique in the field for historical reasons. As attribute data, tablet markings (in the database) may change through reports from the field or otherwise (e.g., data entry mistake). A value of "NO MARKING" is used to indicate that the marker is known to have no tablet markings. A blank value indicates that the tablet markings (if any) is unknown. For example 'LEGAL 123' indicates a British Columbia Legal Monument with known tablet marking, in this case '123'.
MUNICIPALITY_NAME MUNI VARCHAR2 21 MUNICIPALITY NAME contains the name of a British Columbia municipality or regional district within which the Marker is located. If the Marker is not in a municipality this column will contain a value of 'RURAL'.
UTM_REFERENCE_MERIDIAN UTM_REF_MR NUMBER 3 The UTM REFERECE MERIDIAN is reference meridian for the Universal Transverse Mercator projection. For the UTM projection, values are '111', '117', '123', '129', '135', and '141'. In addition, the Zone Number of the Reference Meridian is printed on the ISA Certificate.
UTM_SF_AT_REF_MERIDIAN UTM_ST_RMR NUMBER 3 The UTM SCALE FACTOR AT THE REFERENCE MERIDIAN is the Specific Universal Transverse Mercator projection scale factor at the reference meridian (in this context). In all cases, this value is '0.999600'.
UTM_NORTHING UTM_NORTH NUMBER 38 The UTM NORTHING is theUniversal Transverse Mercator projection grid northing in metres north of the Equator.
UTM_EASTING UTM_EAST NUMBER 38 The UTM EASTING is the Universal Transverse Mercator projection grid easting in metres from the reference meridian.
QUALITY_CLASS QLTY_CLSS VARCHAR2 1 The QUALITY CLASS is a classification that will aid users in deciding which markers to use for their geo-referencing and positioning requirements. The classifications will also be used to "retire" horizontal coordinates of these markers and otherwise discourage the longer-term maintenance of the horizontal coordinates. Classes A, B, C and D. The reliability of the coordinates is rated as follows: Class A is very good, Class B is good, Class C is poor and Class D is very poor. In addition to the above, if the class of a marker is in the process of being evaluated, it would be set to E. Class E means that the class is not known and it could be any of A to D.
MARKER_CONDITION MARK_COND VARCHAR2 17 The MARKER CONDITION is an indication of the physical condition of the marker.
LAST_UPDATE_DATE LST_UPDATE DATE 7 The LAST UPDATE DATE is the date on which the last update to the database was made with respect to the particular marker. For new markers, i.e. those being published for the first time, this date is the same as the Director Of Surveys Confirmation Date. For an existing marker, this date is the same as either (1) the latest coordinate revision date, (2) the latest non-coordinate revision date, (3) the latest marker condition date, or (4) date of last update of survey connections. This date helps monitor changes to the information pertaining to a marker and identifies the type of changes occurring.
ISA_CODE ISA_CODE NUMBER 3 The ISA CODE is a three digit number which identifies the Integrated Survey Area of which the monument is a part. For example, 14 indicates that the monument is part of the COQUITLAM Integrated Survey Area.
DATUM_NAME_HORIZONTAL DTM_NM_HRZ VARCHAR2 5 The DATUM NAME HORIZONTAL refers to the geodetic datum to which the horizontal coordinates (LATITUDE, LONGITUDE) is referred. For example NAS83 indicates the 1983 North American Datum based on the GRS80 ellipsoid (geocentric).
UTM_LAT_STANDARD_DEVIATION UTM_LAT_SD NUMBER 6 The UTM LAT STANDARD DEVIATION is the standard deviation of the latitude coordinate, as applied to both the geographic and UTM coordinates.
UTM_LONG_STANDARD_DEVIATION UTM_LNG_SD NUMBER 6 The UTM LONG STANDARD DEVIATION is the standard deviation of the longitude coordinate, as applied to both the geographic and UTM coordinates.
MINIMUM_HORZ_CONNECTIONS MIN_HRZ_CO NUMBER 38 The MINIMUM HORIZONTAL CONNECTIONS is the record of sight-lines, as previously observed, from the particular GEODETIC CONTROL MARKER to surrounding survey control.
INTEGRATION_STATUS_HORZ INT_ST_HRZ VARCHAR2 16 The INTEGRATION STATUS HORZ indicates whether the horizontal coordinates of the GEODETIC CONTROL MARKER are consistent with the other monuments in the Integrated Survey Area.
ELEVATION ELEVATION NUMBER 7 The ELEVATION is the Elevation in metres of the GEODETIC CONTROL MARKER above mean sea level. Elevation, H=h-N (ellipsoidal height - geoidal undulation).
VERTICAL_DATUM_NAME VRT_DAT_NA VARCHAR2 5 The VERTICAL DATUM NAME refers to the geodetic datum to which the vertical coordinate (ELEVATION) is referred. For example CVD28 indicates the 1928 Canadian Vertical Datum.
GEOIDAL_MODEL_CODE GEO_MOD_CD VARCHAR2 35 The GEOIDAL MODEL CODE uniquely identifies a mathematical model which approximates theGeoid. For example, HT97 indicates that the Geoid Height Model 1997 which combines the Canadian Gravimetric Geoid 1995 geoid model and the errors in the realization of CGVD28 (corrective surface) was used for this monument.
INTEGRATION_STATUS_VERT INT_ST_VRT VARCHAR2 16 The INTEGRATION STATUS VERT indicates whether the ELEVATION of the GEODETIC CONTROL MARKER is consistent with the other monuments in the Integrated Survey Area.
VERTICAL_SURVEY_METHOD VERT_SRVY VARCHAR2 35 The VERTICAL SURVEY METHOD indicates how the ELEVATION of the GEODETIC SURVEY MARKER was measured. For example, a value of 'SPIRIT' indicates that a spirit level was used.
GEOID_UNDULATION GEOID_UND NUMBER 5 The GEOID UNDULATION is the separation in metres between the reference ellipsoid and the geoid, given by N=h-H, where h is the ellipsoid height of the station and H is the orthometric height or elevation of the station. For example, a value of -19.04 indicates that elevation of the station is 19.04 metres below the ellipsoid height of the station.
FEATURE_CODE FEAT_CODE VARCHAR2 10 FEATURE CODE contains a value based on the Canadian Council of Surveys and Mapping's (CCSM) system for classification of geographic features.
GEOMETRY GEOMETRY SDO_GEOMETRY 1 GEOMETRY is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a required attribute of feature classes and object classes in a geodatabase.
SE_ANNO_CAD_DATA BLOB 4000 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.