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.
Lineage:
v1.1: Addition of a vertex in Gulf of Maine to fix an error.
v1.2: Correction of coordinates of points in Gulf of Maine section (Joint Annual Report 89-90) and interpolation of geodesic lines to preserve an accurate representation of the boundary in all map projection.
v1.3: Divided numbered section “27-Southeast Alaska, British Columbia-Alaska” into two new distinct numbered sections: “27-Portland Canal” and “28- Southeast Alaska”. Applied a systematic and thorough review of all point coordinates, geometry, and attributes. Updated official coordinates and geometry of points in numbered section “7 - Southwest Branch of the St. John River” using information from special report No 9 (2017). Updated official coordinates and geometry of points in numbered section “6 - Southwest and South Lines” using information from special report No 8 (2017).