[talk-au] LPI Base Map - green areas ?

Sat Jan 16 00:47:36 UTC 2016

Though I don’t know the area you refer to, I feel landuse=water_catchment is an excellent choice and is the correct tag for an area that has a capture of water as specific defined use as already stated on https://www.wyong.nsw.gov.au/getmedia/7ca695e8-748d-4bca-beba-3b7bff8296e4/Mangrove-Creek-Dam-Brochure.pdf.aspx 
…says ‘Mangrove Creek Dam Catchment’
Though all land is a water catchment, the one above has that as it’s primary and reserved land use.
It may also have other important uses such as conservation value.

Another I like is reservoir_watershed

N

> On 16 Jan 2016, at 7:24 AM, Andrew Davidson <u887 at internode.on.net> wrote:
> 
> landuse=water_catchment doesn't work because you can tag every surface that rain falls on with this.
> 
> After a bit of reading about what the tag means in the European case I think protect_class=12 is fine for this area.
> 
> The various closed catchments around Sydney and Melbourne are also protect_class=12 but the ways inside the special areas would have to be tagged with the correct access to indicate if you can go there.
> 
> 
> On 16/01/16 07:50, Warin wrote:
>> On 15/01/2016 11:04 PM, Marc Gemis wrote:
>>> What about landuse=basin ? [1]
>>> Or natural=water, water=reservoir [2]
>>> or landuse = reservoir, reservoir_type=water_storage [3]
>>> 
>>> 
>>> [1] http://wiki.openstreetmap.org/wiki/Tag:landuse%3Dbasin
>> 
>> "An area of land artificially graded to hold water."
>> 
>> This area is not graded. The area does not hold water.
>> 
>>> [2] http://wiki.openstreetmap.org/wiki/Key:water
>> 
>> Not covered with water.
>> 
>>> [3] http://wiki.openstreetmap.org/wiki/Tag:landuse%3Dreservoir
>> 
>> Does not store water.
>> 
>> This particular area has trees, shrubs. The rainfall there flows into a reservoir.
>> 
>> In Hong Kong ... the area is paved ... and is fairly steep. The rainfall there flows into some form of water storage. It also does not store water itself.
>> 
>> Both areas can use the term 'water catchment'. Similar to a funnel- it 'catches' fluid and sends it on to a storage device.
>> 
>> https://en.wikipedia.org/wiki/Drainage_basin
>> (This area does not 'drain to a single point' .. drains to a single area (of water)... if there was no water there .. then yes it would drain to a single point.)
>> 
>> http://www.oxforddictionaries.com/definition/english/catchment
>> 
>>> 
>>> regards
>>> 
>>> m
>>> 
>>> On Fri, Jan 15, 2016 at 12:06 PM, Warin <61sundowner at gmail.com> wrote:
>>>> On 15/01/2016 2:19 PM, Andrew Davidson wrote:
>>>> 
>>>> Looking at the old Parish map it would appear that it used to be part of the
>>>> State Forest until they built the Mangrove Creek Dam at which point it
>>>> became reserved for water conservation purposes.
>>>> 
>>>> That makes sense.
>>>> 
>>>> I suppose you could tag it:
>>>> 
>>>>  boundary=protected_area
>>>>  protect_class=12
>>>> 
>>>> Not sure what name you'd give it because the map just says "FOR WATER
>>>> SUPPLY".
>>>> 
>>>> 
>>>> landuse=water_catchment would probably be best (another new tag that I just
>>>> made up). It cannot be logged. And in some places at least the water people
>>>> don't even want walkers, let alone campers there. I think part of the Blue
>>>> Mountains National Park has restrictions like this around a water catchment
>>>> area. I think Hong Kong has areas for water catchment that are paved to
>>>> increase the run off/harvest. So there is a vast verity in what water
>>>> catchments physically are.
>>>> 
>>>> As I don't know what name it has .. it could be anything ... 'McPherson
>>>> Water Catchment' or 'Mangrove Creek Water Catchment' ... arrr
>>>> https://www.wyong.nsw.gov.au/getmedia/7ca695e8-748d-4bca-beba-3b7bff8296e4/Mangrove-Creek-Dam-Brochure.pdf.aspx 
>>>> says 'Mangrove Creek Dam Catchment' .. so I'll go with that. No copyright on
>>>> the pdf... :-)
>>>> It does say access is restricted.. but not what the restrictions are.
>>>> 
>>>> -----------------------------
>>>> For those also using the LPI base Map to plot State Forests ... be carefull.
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ----- Original Message -----
>>>> From:
>>>> "Warin" <61sundowner at gmail.com>
>>>> 
>>>> To:
>>>> "talk-au" <talk-au at openstreetmap.org>
>>>> Cc:
>>>> 
>>>> Sent:
>>>> Fri, 15 Jan 2016 10:58:49 +1100
>>>> Subject:
>>>> [talk-au] LPI Base Map - green areas ?
>>>> 
>>>> 
>>>> Hi,
>>>> 
>>>> On the LPI base map green areas apear at first to be
>>>> National Parks - a darker green area that is visible at all zooms.
>>>> State Forests - lighter green, visible when zoomed in.
>>>> 
>>>> I have mapped out the McPherson State Forest boundary using the LPI base
>>>> map. Fine (apart from a typo in the name!). Relationship 5748137.
>>>> 
>>>> However when I use the 'Administration Boundaries State Forests' the
>>>> northern section I have plotted does not look to be a State Forest.
>>>> 
>>>> So what is this green area on the LPI base map .. when it is not a State
>>>> Forest?
>>>> I have mapped some as parks as shown by their name. And I found one
>>>> where I know it as a 'common'.
>>>> 
>>>> Maybe they are "miscellaneous crown lands"?
>>>> 
>>>> I'll reduce the relationship 5748137 to match the smaller admin boundary.
>>>> But what to do with the other green bit from the base map? I can leave
>>>> it behind with a note .. and no other tags. Would be usefull if someone
>>>> comes across it and knows what it is.
>>>> 
>>>> 
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>>>> 
>>>> 
>>>> 
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>> 
> 
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