Benchmark - MMMCCCXXXI

Benchmark Number MMMCCCXXXI
Established In 1924
Condition GOOD
Latitude 42.25356
Longitude -81.90933
Reference Benchmark No
Vertical Datum Code UNKNOWN
Type PERMANENT_MARKER
Setting HORIZONTAL
Description A G.S.C. survey bolt set in lighthouse, at outer end of concrete breakwater, bolt in north wall, 67 cm from northeast corner and 52 cm above platform and 69 cm east of iron doors. Horizontal Position updated to NAD83CSRS in January 2010.

Horizontal position updated September 2018 based on description and Google Earth. Previous position: N 42.253056, W 81.91. Coordinates and condition updated from 2022 field notes.

Elevations
Date Elevation Status Vertical Datum Code
N/A 176.306 ACTIVE IGLD1985
N/A 2.794 ACTIVE CDIGLD1985