Okay, I think it is fixed - for now.

I added points for the Municipality of Jasper adjacent to the border survey markers.

FYI, the issues and history of the boundaries are:

- The B.C. - Alberta border was, and is, statutorily defined as the 'height of land' (continental divide) between British Columbia and Alberta.  The original survey (Interprovincial Boundary Commission Survey) was completed by A. O. Wheeler using photogrametric procedures which often included substantial errors, as the actual locations were never visited.

- The passes were manually surveyed by R. W. Cautley and defined with survey monuments and markers.  I previously found on imagery as many of these as I could to ensure they were accurately placed on OSM.

- The parks are entirely within their respective provinces, as are the districts and municipalities.

- The Municipality of Jasper was carved out of Improvement District (ID) 12 (Jasper National Park), and they are spatially exclusive at the same political level.

- Outside of the surveyed boundary, on the 'height of land', the mapping issue gets more complex, as most maps (NTS) and databases are erroneous.  The original maps and subsequent derivations are somewhat coarse and inaccurate.  Newer mapping (Robson Park) seem to use actual hydrographic sources, which are more accurate, but conflict with legacy mapping.  Robson Park is probably legally and geographically more accurate, but should still follow the original surveyed sections.

- Ideally and ultimately, the entire 'height of land' boundary should be re-mapped on OSM to reflect the geography.  AFAIK, the Alberta databases use legacy boundaries, but there may be more current and accurate British Columbia government sources to circumvent manual mapping.  ID editor previously included hydrographic divides on "Geobase Hydrography - English" (Canadian Government), but I cannot see those divides anymore.

thanks,
Baden

