Benchmark - A
| Benchmark Number | A |
|---|---|
| Established In | 1947 |
| Condition | GOOD |
| Latitude | 53.155917 |
| Longitude | -129.741133 |
| Reference Benchmark | No |
| Vertical Datum Code | UNKNOWN |
| Type | BRONZE_TABLET |
| Setting | VERTICAL |
| Description | On the third largest island, southwest of the east shore of the largest of Block Islands, 23m southeast of BM B, a bronze tablet stamped: "Canadian Hydrographic Service BM A". |
| Date | Elevation | Status | Vertical Datum Code |
|---|---|---|---|
| 2013-08-05 | 6.175 | ACTIVE | CD |
| N/A | 3.353 | ACTIVE | CGVD2013 |
| 2013-08-05 | 3.173 | ACTIVE | CGVD28_HTv2_0 |
| 2013-08-05 | -7.484 | ACTIVE | NAD83_CSRS |