[Talk-us] Katahdin Woods and Waters National Monument

Kevin Kenny kevin.b.kenny+osm at gmail.com
Fri Aug 26 04:56:06 UTC 2016


Perhaps you could inquire via the contact information in
http://www.katahdinmaine.com/images/pdf/KatahdinVG2015-WEB.pdf where they
got the GIS data? There are maps of the new area on pp. 44-45, 50-51,
54-55, 76-77.

Failing that:

We could georeference the map of the area at
https://www.nps.gov/kaww/planyourvisit/upload/KAWW-Recreation-Map-08_2016.pdf
(presumably a US Government work not subject to copyright) and select the
corresponding area in the tax parcel map available from
http://www.maine.gov/megis/catalog/ (which appears to have OSM-compatible
usage terms: http://www.maine.gov/megis/catalog/metadata/parcels_ut.htm).

I've managed to extract park boundaries from tax parcel data in New York in
the recent past.

I'm lookng at the tax parcels from
http://www.maine.gov/megis/catalog/shps/state/parcels_uts.zip overlaid atop
a roughly georeferenced version of the NPS map in QGIS right now, and
except for the fact that two parcels (01-1 and 01-3.1) in the southwest
corner appear to have been subdivided, the NPS map follows the tax map.
There appears to be an error in the boundary between lots 01-2.21 and
01-2.2 as well, and there, since the shape appears to be similar, I'm more
inclined to trust the taxing authority. (A lot of these backcountry
property lines are based on ancient surveys where the errors of closure
could literally be tens or even hundreds of metres, so I strongly suspect
that there's an indefinite boundary in there, anyway.)

Dissolving the parcel polygons, slicing off the line at the southern
boundary, and adding the little missing bit by Whetstone Falls, would give
us a pretty darned accurate outline. It would look like hell on the
rendered map unless we also brought in the polygons for the rivers, but
that would also surely be doable.

I'm likely not to have time for this project for a couple of weeks, but
I'll happily put it on the 'things to do' list if the legal beagles are
comfortable with this approach.


Kevin

On Thu, Aug 25, 2016 at 10:58 PM, Jeffrey Ollie <jeff at ocjtech.us> wrote:

> So, if you haven't seen the announcement, yesterday President Obama
> established the latest National Monument.
>
> https://www.whitehouse.gov/blog/2016/08/24/president-
> obama-designates-national-monument-maines-north-woods
> https://www.nps.gov/kaww/index.htm
>
> It'd be nice to get at least the boundaries into OSM, anyone have a
> source for the data? I didn't see anything obvious in the NPS data
> portal.
>
> --
> Jeff Ollie
> The majestik møøse is one of the mäni interesting furry animals in Sweden.
>
> _______________________________________________
> Talk-us mailing list
> Talk-us at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-us
>
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