Benchmark - 420-A-4
| Benchmark Number | 420-A-4 |
|---|---|
| Established In | 1957 |
| Condition | GOOD |
| Latitude | 45.340278 |
| Longitude | -80.031611 |
| Reference Benchmark | No |
| Vertical Datum Code | UNKNOWN |
| Type | PERMANENT_MARKER |
| Setting | HORIZONTAL |
| Description | A G.S.C. bronze tablet stamped 420-A-4, set in C.P.Railway, Concrete supporting pier of viaduct in town, fifth truss support from east end of viaduct (located on Great North Rd.). Tablet in centre of south face of southeast pier (one of four), 0.97 metres below top of pier. Horizontal Position updated to NAD83CSRS in January 2010. Coordinates updated based on 2022 field notes with GPS handheld +/-4m accuracy. |
| Date | Elevation | Status | Vertical Datum Code |
|---|---|---|---|
| N/A | 13.03 | ACTIVE | CDIGLD1985 |
| N/A | 189.032 | ACTIVE | IGLD1985 |