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U.S. Historic Survey Stones and Monuments
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This category is for non-disk monuments located in the United States whose position was established by surveying.
Expanded Description:
There are many interesting monuments used to mark the position of a point officially established by surveyors. This category is for those that are not the usual disk type of survey marker. Many of them are over a hundred years old and have their own special historical significance.

This category includes: geodetic survey monuments, cadastral survey monuments, geographic survey monuments, boundary monuments, border monuments, pre-1900 highway mile markers and other types of survey monuments that are solid, standing monuments and can be made of out of any of several types of materials but are not the usual disk type of survey marker.

Along with disks, this category excludes: pipe caps, rod markers, buildings, parts of buildings, items mounted on buildings, towers of any type, lights, beacons, mountains, smokestacks, poles, antennas, nails, rivets, wood stakes, signs, highway right-of-way markers, chiseled or painted marks and private property corner markers.

Some monuments have a disk mounted on them and such monuments are acceptable provided that they were not made simply as a monumentation structure for mounting the disk. An example of such an acceptable monument would be a boundary monument established in 1850 with a disk marker mounted in it in 1930.

This category accepts items that meet the above criteria whether or not there is a datasheet in the geocaching database for it.

Instructions for Posting a U.S. Historic Survey Stones and Monuments Waymark:
1. A closeup photo of the monument is required
2. A description (to-reach) of how to locate the monument is required in the Long Description field.
3. Coordinates based on reading your GPS receiver are required. You must use either NAD83 or WGS84 datum.
Instructions for Visiting a Waymark in this Category:
1. A closeup photo of the monument is required.
2. A 'distant' photo including the monument in the view is highly recommended. Include the compass direction you faced when you took the picture.
Category Settings:
  • Waymarks can be added to this category
  • New waymarks of this category are reviewed by the category group prior to being published
  • Category is visible in the directory
  • Monumentation Type
  • Monumentation Type (if other)
  • Monument Category
  • Monument Category (if other)
  • Accessible to general public
  • Explain Non-Public access
  • Historical significance
  • Monument Website
  • County
  • USGS Quad
  • Other Coordinates
  • Other Coordinates details
  • Approximate date of monument
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Image for Tri-State Iron Post Historical Marker, USGS Valley Springs (SD,MN,IA)view gallery

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U.S. Historic Survey Stones and MonumentsTri-State Iron Post Historical Marker, USGS Valley Springs (SD,MN,IA)

in U.S. Historic Survey Stones and Monuments

Intersecting State borders of SD, MN, and IA with plaque on Monument entitled 'Tri-State Marker'

posted by: Groundspeak Premium Member plainsdrifter358

location: South Dakota

date approved: 1/16/2007

last visited: 9/28/2021

Image for SGT. FLOYD OBELISK view gallery

SS115.6 km

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U.S. Historic Survey Stones and MonumentsSGT. FLOYD OBELISK

in U.S. Historic Survey Stones and Monuments

Designation: SIOUX CITY FLOYD MON TIP SHAFT. Marker Type: Monument. Setting: setting not listed - see long description. Stability:

posted by: Groundspeak Regular Member GEO*Trailblazer 1

location: Iowa

date approved: 8/22/2006

last visited: 6/26/2019

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