Leveling to tide staff and water’s edge at extreme low tide. Bubbler gauge orifice at right lower edge of photo. Improper installation necessitated leveling to assure observing lowest low water . Tidal bench mark leveling work off of DAVIDSON
Photo Category: Charting - Tides - Leveling
Photo Location: Southeast Alaska
Photo Date: 1979
| Added On | 18th October 2015 |
| Viewed | 8 viewed |