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DukeOfURL01

never seen one of these before

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A buddy of mine went out of town, and while he was geocaching, he found this mark by accident. I've never seen one quite like this before, and didn't even know that this agency (USFS) even set marks.

 

JasonsBenchmark.jpg

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This a land survey (cadastral) mark, not a geodetic mark, so it is unlikely to have an elevation or lat-lon data sheet anywhere.

 

It marks a 1/16-section corner (40 acre tract) on the line of sections (mile square blocks) 28 and 33, set by the land surveyor with license number 5716.

 

But with GIS training, you probably knew that.

Edited by Bill93

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...and didn't even know that this agency (USFS) even set marks.

 

Bill did a great job responding to your question.

 

I just wanted to show you two (non-cadastral) cases where the USFS set marks that are in the NGS database. One is vertical control and the other is horizontal.

 

 

QQ 35 QC0064:

dc549881-b3b4-4ad6-a614-d1063f338b40.jpg

 

 

WILSON RD1646:

2bd02b57-d7ba-44ae-9e76-13d9548f08c6.jpg

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...and didn't even know that this agency (USFS) even set marks.

 

Bill did a great job responding to your question.

 

I just wanted to show you two (non-cadastral) cases where the USFS set marks that are in the NGS database. One is vertical control and the other is horizontal.

 

 

QQ 35 QC0064:

dc549881-b3b4-4ad6-a614-d1063f338b40.jpg

 

 

WILSON RD1646:

2bd02b57-d7ba-44ae-9e76-13d9548f08c6.jpg

 

Here's another: Linholm AA8201

e66fc6d9-dac1-4d9f-801f-1e1cd9399eb2.jpg

Horizontal control for a cadastral project

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Found one of these up near Dunsmuir, California. It was on a bridge spanning the Sacramento River. A little beat up (what is with defacing these things?) but clear enough to read. I find them in old ranch lands which are now Open Space parks, quite often.

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Found one of these up near Dunsmuir, California. It was on a bridge spanning the Sacramento River. A little beat up (what is with defacing these things?) but clear enough to read. I find them in old ranch lands which are now Open Space parks, quite often.

 

Yeah, this one was east of Sacramento, along Hwy 50. A few feet from N38 45.864 W120 32.286

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Here's another unusual one that I saw a while ago. I saw it a little east of Cloverdale, CA. One of the strange things about it is the sqaure in the middle, I've only seen triangles there before.

 

DSCN1108.jpg

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