Benchmark - 57C9521
| Benchmark Number | 1-1957 |
|---|---|
| Established In | 1957 |
| Condition | GOOD |
| Latitude | 52.3591 |
| Longitude | -131.1807 |
| Reference Benchmark | No |
| Vertical Datum Code | UNKNOWN |
| Type | BRONZE_TABLET |
| Setting | VERTICAL |
| Description | On the north side of Copper Islands, on the southeast shore of a cove, about 610 metres from the light, 9 metres north from a blazed tree with a cross of nails, 0.9 metre above highwater, set in a rocky ledge, a bronze tablet marked: "Hydrographic Service, Canada, BM 1 1957". |
| Date | Elevation | Status | Vertical Datum Code |
|---|---|---|---|
| 2011-07-17 | 6.151 | ACTIVE | CD |
| N/A | 3.444 | ACTIVE | CGVD2013 |
| 2014-06-12 | -7.954 | HISTORICAL | NAD83_CSRS |
| 2014-06-10 | 3.107 | HISTORICAL | CGVD28_HTv2_0 |
| 2017-06-11 | 2.454 | ACTIVE | CGVD28_HTv2_0 |
| 2017-06-11 | -8.607 | ACTIVE | NAD83_CSRS |