Published Coordinates for Section Corners
I’ve worked in a few counties with excellent county performed recovery and/or remonumentation of section corners throughout nearly the entire county. One county took 13 years to complete this task.
The county surveyors have made public the coordinates in county coordinate systems from their observations in various forms. Corners that have not been gps’d recently or have questionable coordinates for whatever reason are labeled as approximate or something of the like. In most cases the coordinate data is available in GIS shape files and includes attributes including the date they were shot, and quality of coordinates.
The coordinates are overwhelmingly of very good quality. It’s rare I find one listed as “survey quality” off more than 0.10 feet. Often within hundredths (I’ve recently stated in another post about dialing up into NGS monument elevations within hundredths as well. Some were shocked. I’m not making this stuff up)
Obviously this is a huge help for coming up with search coordinates property corners. These coordinates have saved massive amounts of time by being able to stakeout to a corners within inches. At worst a few feet from some older surveys.
The question I have is using the section corner coordinates as gospel and never occupying yourself for each survey.
Let’s say you have a simple 40 acre parcel in very hilly and thick country. You need to get 5 section corners to break this parcel down.
All I’ll say is it kinda sucks to spend 4 hours of bushwhacking for section corners just to have your coordinates differ by a couple hundredths on any one corner.
Part of our duty is to report conditions, another is to maintain the monuments. A spreadsheet of coordinates is not only useless to owners, it is legally subservient to nearly every other form of evidence.
Coordinates will eventually work thier way up the order of calls. A few places they already have. I don't work in any and don't plan to any time soon..
Whut? Coordinates are fabulous for searching but finding the original monument or restoring an obliterated corner position from accessories trumps any "coordinate" relocation. Coordinates are at the bottom of the hierarchy and maybe be worth considering for "lost" corners but adjacent corners may trump coordinates concerning a truly proportionate resolution.
Concerning local accessories 4' trees with blazes even if dead are definitive evidence to within a few tenths. An actual bearing tree is definitive. I'm just saying bad coordinates could mess up what's on the ground and result in clearly monumented positions losing their provenance and suffer from um "coordinate shifts" which could be tens of feet.
GPS surveying is totally cool and results an a few inches accuracy, but that's not the same as resolving ancient ownership based on record monuments and occupation. Surveying is all local.
Just a talking point.......... but wouldn't a coordinate would make it an obliterated corner? .......
it’s just frustrating to know other surveyors are not taking the time to hunt them down every time.
Why would you want to put yourself on that level?
I sleep better at night, knowing I did the best I could...
I do enjoy using those published coordinates to calculate where my corners are and finding those corners within a reasonable tolerance.
But if that's the case; it's usually not that difficult to find the published monuments...