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".
Elevations
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