[OSM-talk-ie] Query on tracing townlands and dealing with changed lake levels and new boundaries

[Dave Foley]

Some of the townlands did have their boundary updated, such as Rock Big in Wicklow (http://www.openstreetmap.org/#map=15/52.7749/-6.1459) , see http://www.irishstatutebook.ie/1994/en/si/0333.html . But that seems to be more of an exception than a rule. 

Personally I would put the boundary on the existing level of the lake but keep Inishfale with as much of the original boundary as possible. Maybe it's something that can be looked at again when all the townlands are mapped?

Dafo

> From: killiandriscoll at gmail.com
> Date: Fri, 15 May 2015 15:49:33 -0400
> To: talk-ie at openstreetmap.org
> Subject: Re: [OSM-talk-ie] Query on tracing townlands and dealing with changed lake levels and new boundaries
> 
> Thanks, I've just read the earlier messages.
> 
> For the most part it's not probematical to use the new lake level, but it
> does raise some anomalies. For example:
> At the SW side of Lough Allen the pre-drainage scheme lake level contained
> an island called Inishfale Island with the townland of Derrynadooey to the
> west. This contains a national monument RO002-028 (
> http://webgis.archaeology.ie/NationalMonuments/FlexViewer/) which is listed
> as townland: Inishfale Island; you can see that the map the national
> monuments is using respects the pre-drainage shoreline townland outline.
> The traced townland on the osm
> http://www.openstreetmap.org/?mlat=54.0715&mlon=-8.0517#map=16/54.0715/-8.0517
> of Derrnadooey now subsumes Inishfale Island, so the official sites and
> monuments record (which was incorrect, as there is no such townland as
> Insihfale Island) now conflicts with the townland name provided by osm.
> 
>