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This question already has an answer here:

Does anyone know where I can find a list of geodetic benchmark locations for all of Canada?

I am looking for a few specific control monuments in Arctic Canada with accurate coordinates

marked as duplicate by PolyGeo Aug 28 at 20:23

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    Canadian Active Control System points seem like the modern equivalent of geodetic benchmarks (you can download data here). "The Canadian Active Control System (CACS) consists of unattended tracking stations, referred to as Active Control Points (ACPs), equipped with a high precision dual frequency GNSS receiver and an atomic frequency standard, which continuously record carrier phase and pseudorange measurements for all GNSS satellites within station view." – csk Aug 28 at 19:34
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    Where have you looked already? – Spacedman Aug 28 at 19:34
  • I'm looking for something like this, but Canada wide since I am looking for a few specific control monuments in northern canada: gisapplication.lrc.gov.on.ca/cosineONT/… – SarahHart Aug 28 at 19:41
  • I also found this website but the search tools don't seem to work very well. waymarking.com/cat/… – SarahHart Aug 28 at 19:51
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    Answers that can be given as one weblink points to a question that's not very good to begin with. Also, maybe this would be better suited on opendata.stackexchange.com – Gabriel C. Aug 28 at 20:16
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You are looking for this:

Passive Control Networks

Partly answered by another GIS:SE Q&A.

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