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71U019 (Geodetic Survey of Canada) - Thorold, Ontario
Posted by:
Bon Echo
N 43° 06.970 W 079° 11.930
17T E 646534 N 4775289
Located on the Thorold Tunnel along Ormond St South
Waymark Code: WM13HB4
Location: Ontario, Canada
Date Posted: 12/17/2020
Views: 1
There are two benchmarks on the east face of concrete guardrail at top of west end of tunnel, along Ormond St South - 17U019 to the north, and 17U020 to the south
The station report is from the NRC Passive Control Network database:
Site Identification
Name |
Province |
NTS map sheet |
Unique Number |
Provincial Identifier |
Network |
71U019 |
Ontario |
030M03 |
71U019 |
|
43079 |
Horizontal Data
Coordinates scaled from map
Geographic
Latitude |
Longitude |
43° 6' 54.0" |
79° 11' 52.8" |
UTM
Zone |
Easting (metres) |
Northing (metres) |
Scale |
17 |
646605.463 |
4775161.431 |
0.99986 |
Vertical Data
Vertical Datum |
Elevation (m) |
Order |
Gravity (mGal) |
Published |
Project ID |
CGVD2013 (2010.0) |
179.680 |
1st |
980378.75 |
2013 |
H13ML1311 |
CGVD28 |
180.129 |
1st |
980447.44 |
1980 |
VA6U71 |
IGLD85 |
180.152 |
1st |
980619.90 |
1992 |
IGLD85AP92 |
The CGVD2013 height reported in the Vertical Data table is approximate because it is calculated from historical levelling data and not from the combination of GNSS and a geoid model.
Station Marker
Marker Type |
Inspected in |
Established by |
Status |
Comments |
Permanent agency marker |
1971 |
Canadian geodetic survey - nrcan |
Good |
None |
Location
Thorold thorold tunnel, under st. Lawrence seaway, tablet in east face of concrete guardrail at top of west end of tunnel, opposite department of transportation and communications service building, 6.7 m from centre line of road, 85 cm below top of concrete rail, 40 cm south of north end.