872 4580 TIDAL 30
Spatial/elevation data
| Coordinates | N 24.554667° W 81.803967° |
| Elevation | 15.07 ft. |
| Location | Florida
Monroe County Key West Quad |
Mark description
| Type | Tidal Bench Mark Disk |
| Setting | Brick Wall |
| Monumented | 1923 by NGS |
| Description (NGS) | NGS Datasheet |
Narrative and photographs
Much of our plan for the day’s activities was built around various benchmark locations. The first was a benchmark disk—872 4580 TIDAL 30—set vertically into the brick wall of the old courthouse. It was an easy find once we located the correct building, and required a quick dive into the shrubbery to recover it. At the time of our visit, the disk was encircled with red paint. The disk is in good condition.