MASCOT Geodetic Control Monuments
1319 views (37 recent)Published by the Ministry of Forests, Lands, Natural Resource Operations and Rural Development - GeoBC
Licensed under Open Government Licence - British Columbia
Data and Resources
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Fixed points to spatially reference surveys, mapping, aerial and satellite imaging, etc.
Data quality varies widely. Users are advised to pay close attention to various data attributes that serve as quality indicators. Checks to multiple surrounding monuments is also advised to verify quality.
Published values are derived from observations made using multiple different types of survey instruments and methods over multiple decades. Standards and specifications have evolved over time.
|Name||Base Mapping and Cadastre Help Desk (pointOfContact)|
|Organization||Ministry of Forests, Lands, Natural Resource Operations and Rural Development|
Access & Security
|Who can view this dataset?||Government|
|Who can download this dataset?||Government|
|Record Last Modified||2021-05-13|
Object Name: WHSE_REFERENCE.MASCOT_GEODETIC_CONTROL
Short Name: MSCT_G_CNT
|Column Name||Short Name||Data Type||Data Precision||Comments|
|GCM_NUMBER||GCM_NUM||NUMBER||7||GCM NUMBER is a unique number, from 1 to 999,999, with the last digit being a check digit with a value from 0 to 9 that uniquely identifies a British Columbia Geodetic Control Monument (GCM). This is not a meaningless surrogate key. It is assigned by MASCOT administrators and is known across Canada as a GCM_NO. In Alberta it is called an ACM_NO.|
|LATITUDE_DEGREES||LAT_DEG||NUMBER||2||LATITUDE DEGREES contains the degree portion of geographic latitude of the Geodetic Control Monument|
|LATITUDE_MINUTES||LAT_MIN||NUMBER||2||LATITUDE MINUTES contains the minute portion of geographic latitude of the Geodetic Control Monument|
|LATITUDE_SECONDS||LAT_SEC||NUMBER||2||LATITUDE SECONDS contains the seconds portion of geographic latitude of the Geodetic Control Monument. The value is a generalization of the actual value, to the nearest second.|
|LONGITUDE_DEGREES||LONG_DEG||NUMBER||3||LONGITUDE DEGREES contains the degree portion of geographic longitude of the Geodetic Control Monument|
|LONGITUDE_MINUTES||LONG_MIN||NUMBER||2||LONGITUDE MINUTES contains the minute portion of geographic longitude of the Geodetic Control Monument|
|LONGITUDE_SECONDS||LONG_SEC||NUMBER||2||LONGITUDE SECONDS contains the seconds portion of geographic longitude of the Geodetic Control Monument|
|SYMBOLOGY_TYPE||SYM_TYPE||NUMBER||1||SYMBOLOGY TYPE contains the index number of a symbol to be used in an AXL file for a WMS layer. The symbol numbers to types are: 1 = Published GCM (GPS, or GPS and Terrestrial), 2 = Published Provincial Benchmark (except GPS), 3 = Published Federal Benchmark (except GPS), 4 = Non-published GCM (Low horizontal accuracy), 5 = Published CGM (Terrestrial only), 6 = Non-published GCM, Preliminary, 7 = Destroyed GCM.|
|TABLET_MARKING||TAB_MARK||VARCHAR2||16||TABLET MARKING contains the name of the marker as stamped on the cap in the field. Under the MASCOT system, new markers shall now be stamped with the Geodetic Control Monument (GCM) number instead of the old CSDB Identifier based on the year of installation. 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 special value of "NO MARKING" is used if a marker is known to be unmarked.|
|MUNICIPALITY_NAME||MUNI_NAME||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'.|
|MASCOTW_GCM_QUERY_URL||MASCTW_URL||VARCHAR2||110||MASCOTW GCM QUERY URL is a URL to the MASCOTW application that invokes the GCM_NO query page. This URL is used automatically by iMapBC (IMF) and is presented as a "More" link on the data page. e.g. http://slkux5.env.gov.bc.ca:7780/mascot_cgi-bin_nph/query1_imf.html?GCM_NO=727198&|
|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.|