You don't need no stinkin' surveyor . . .

[DWoolley]

I don't recall mentioning GIS as the source for this, plenty of maps, right of way plans, and monuments have established coordinates on them or can be established from ancillary information. If you can't quantify the accuracy then it is a situation where more thorough survey would be required. There are plenty of situations where you can establish an expected accuracy from the previous work, not all situations. Again let the professional make the judgement. Also, Every time you do anything you accept responsibility and liability, use your judgment and make a professional call.

Suppose you have a recently filed map. The map mathematically closes 0.01'. A field survey puts coordinates on two monuments shown on the map. How accurate is the boundary?

Besides GIS, what is the incentive to do this process? What is the use case?

DWoolley

[LA Stevens]

If you are preparing a topographic map that shows the boundary, you should tie and show the boundary monuments along those lines or any others that you found to determine your boundary. The existing boundary monuments are a feature of the topographic map.

[LS9200]

I don't recall mentioning GIS as the source for this, plenty of maps, right of way plans, and monuments have established coordinates on them or can be established from ancillary information. If you can't quantify the accuracy then it is a situation where more thorough survey would be required. There are plenty of situations where you can establish an expected accuracy from the previous work, not all situations. Again let the professional make the judgement. Also, Every time you do anything you accept responsibility and liability, use your judgment and make a professional call.

Suppose you have a recently filed map. The map mathematically closes 0.01'. A field survey puts coordinates on two monuments shown on the map. How accurate is the boundary?

Besides GIS, what is the incentive to do this process? What is the use case?

DWoolley

I think you answered your own questions with the first statement, and the narrative discussed recently in this thread is the second.

[LS_8750]

On the topic of using judgement and making the professional call.........

The Plat is entitled "Boundary Exhibit"

Note 1 states: "THE PURPOSE OF THIS MAP IS FOR AN EXHIBIT AND THE CONTENT IS RELATIVE TO THE INTENDED USE." ..........

Well, ok.

Then Note 2 goes on: "THIS MAP DOES NOT CONSTITUTE A BOUNDARY DETERMINATION BY THIS SURVEYOR."......

The subject line is between two found original monuments, with no encroachments............

The WTF vibes are present on this one....