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.
Elevations
Date Elevation Status Vertical Datum Code
N/A 13.03 ACTIVE CDIGLD1985
N/A 189.032 ACTIVE IGLD1985