The survey points are based on IBC data (which they view as PD) and are supposed to be accurate within a few cm and the limits of NAD83 to WGS84 conversion (a few more cm).
I've verified a few by the lower mainland with survey and against a few sources of accurate imagery and their data seems accurate within the limits of the imagery. You can see a clearing along parts of the border in that area so it's accurate to within 20 meters. I know that Washington State argued that they were not responsible for the border costs in Blaine because it was not part of the state since the state ended at the 49th parallel and the border is north of the 49th there. What I'll do is go and eliminate duplicate border ways, like I did with the lower mainland. From: Clifford Snow [mailto:[email protected]] Sent: Monday, September 17, 2012 4:49 PM To: talk-us Subject: [Talk-us] US-Canada Border between BC and Washington State I've been doing some work in the North Cascades National Park. It appears that the border between the US and Canada is wrong. Look at http://www.openstreetmap.org/?lat=48.9841 <http://www.openstreetmap.org/?lat=48.9841&lon=-121.743&zoom=13&layers=M> &lon=-121.743&zoom=13&layers=M It appears that the boarder sags to the south. I see tags man_made = survey_point which would indicate that the border placement is correct. Can anyone recommend how to validate the border placement? -- Clifford I have promised to cut down on my swearing and drinking, which I have. Unfortunately, this has left me dim-witted and nearly speechless. Adapted from The Lion by Nelson DeMille -or- If you can't explain it simply, you don't understand it well enough. Albert Einstein
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