This shapefile is a digital representation of the International boundary between the United States and Canada as per the Treaty of 1908. It has been generated from a combination of recent surveys and datum conversions. It is intended for mapping purposes only.
The shapefile is composed of 29 segments that correspond to the original 256 boundary maps. Attributes of each segment define the scale in which the line in that area may be accurately depicted. It is produced for mapping purposes only and not intended to illustrate the boundary beyond the limits of the scale for any given segment.
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Use of this information is subject to the OPEN GOVERNMENT LICENCE - CANADA http://data.gc.ca/eng/open-government-licence-canada.
© International Boundary Commission. All rights reserved.
The boundary segment between TP106 (43-37-52 N, 76-47-48 W) and TP107 (43-37-52 N, 78-41-25 W), Section 14 – Lake Ontario and Niagara River and the boundary segment between TP158 (41-40-35 N, 82-23-51 W) and TP159 (41-40-35 N, 82-40-47 W), Section 15 - Lake Erie, Detroit & St. Clair Rivers are not straight lines. The boundary segment in both these cases follow the parallel of latitude and some care should be given to ensure adequate representation in various projections.