[talk-au] Mapping easements

[Warin]

There are lots of different types of easements.

Other than buried gas pipe lines there are;

buried optical fiber lines

over head power lines, and access tracks to them

public roads through property (farms, State Forests, National Parks etc)

private access through one or more properties to another private property

old stock routes (the long paddock) .. these can be see on the DCS base 
map - e.g. Sturt National Park


And probably more...


The old stock routes cannot be 'seen on the ground'. Yet someone could 
insist on using it.. they would need permission from IIRC the stock 
board who usually imposes restrictions - start dates, minimum speed - 
where stops are made and for how long .. etc.


Mapping what you see is fairly safe. Mapping an easement ... ? how wide 
is it? There would be lots of questions about it .. I'd stay away unless 
you have a formal source  that can easily be checked.

On 18/3/22 18:29, Stéphane Guillou via Talk-au wrote:
>
> Thanks for raising the issue, Graeme.
>
> I opened the issue but I have limited understanding of what an 
> easement is in different jurisdiction.
>
> Ben makes a good point in that an easement can be considered as an 
> absence of something else, so might not need to be mapped, more 
> specifically a space in between plots that can be built. Maybe why 
> there is so little of it mapped on OSM?
>
> Where the note points, I believe the reason it exists is access to the 
> small bit of bushland and the creek, for emergency services for 
> example. In that case, should it be tagged as a track rather than a 
> footway? And what access tag should be used?
>
> Cheers
>
> On 18/3/22 15:29, Benjamin Ceravolo wrote:
>> If there is no formed track (but vehicles do use it) then I would 
>> think that highway=track or path, surface=grass, visibility=no, low, 
>> etc. and access=private, otherwise landcover=grass would be fine in 
>> my opinion.
>> OSM is not a town planning serves it, it does not contain 
>> zoning codes or laws so why should it contain easements?
>> Further to this, easements are a lack of ground structure (due to an 
>> underground, overground, or planned utility/road), therefore not 
>> having anything mapped on top of them would not cause a problem (and 
>> the eagle eyed may think there is an easement there)
>>
>> Ben
>>
>> On Fri, 18 Mar 2022 at 10:58, Graeme Fitzpatrick 
>> <graemefitz1 at gmail.com> wrote:
>>
>>     A note had been raised concerning mapping a Council access easement:
>>     https://www.openstreetmap.org/note/2883145#map=19/-27.50901/153.03017
>>
>>     Suggestion was made that these should be leisure=nature_reserve
>>     as it is not to be developed on?
>>
>>     I suggested that they're just highway=footway + surface=grass,
>>     possibly with access=private if so signposted e.g:
>>     https://www.openstreetmap.org/way/538670878
>>
>>     Alternative suggestion was landuse=easement?
>>
>>     Have just done some searching &, strangely, there are basically
>>     no easements in OSM!
>>     https://taginfo.openstreetmap.org/search?q=easement
>>
>>     The 13 "easements" are all in Australia for gas pipelines:
>>     https://overpass-turbo.eu/s/1gXr,
>>     while the 28 "easement_filed" are all in Florida for power lines:
>>     https://overpass-turbo.eu/s/1gXs
>>
>>     The only other mentions of easements are in the wiki for US
>>     Public Lands:
>>     https://wiki.openstreetmap.org/wiki/United_States/Public_lands,
>>     together with a brief mention in Massachusetts:
>>     https://wiki.openstreetmap.org/wiki/Massachusetts/Conservation
>>
>>     So, how would we like to map these areas?
>>
>>     3 alternatives would seem to be nature_reserve / landuse or highway?
>>
>>     Any other suggestions / thoughts?
>>
>>     What do we all think?
>>
>>     Thanks
>>
>>     Graeme
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>>
>>
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> -- 
> Stéphane Guillou
> http://stragu.gitlab.io/
>
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