Re: [Tagging] Irrigation: usage=irrigation vs irrigation=yes [Was Irrigation: ditches, canals and drains]

[John Willis via Tagging]

> On Jun 5, 2019, at 10:54 AM, Joseph Eisenberg  
> wrote:
> 
> 75% of waterway=drain are 2m wide or less, so most mappers do not use
> this tag for wide, canal-sized drainage waterways.


I tried repairing the mapping for an irrigation drain in my area to see how to 
map it. 

Similar to how streams and rivers often have weirs to control flow and overflow 
when they meet or split, small drains, especially irrigation, use “flash 
boards” to control flow. they fit into the body of drain channel and block the 
flow to raise the water level in the drain to supply water to additional ways.

Larger drains have small structures (1-3m) that hold multiple sets of flash 
boards to control water level and flow to branching drains and ditches, and 
inadvertently act as a garbage trap. 

https://www.openstreetmap.org/way/696049197#map=19/36.42661/139.25801 


This is a ~2x3m box of this nature. 

similar to flow_control=sluice_gate, I think I am going to use 
flow_control=flash_boards on drains/ditches with flash_boards controlling water 
flow and flow_control=flash_board_box on areas for the larger mappable 
enclosures visible in imagery for irrigation. 

Similar to the mapping the logical control of roads (stop signs, lights, 
barriers, etc), I imagine if people want to map the logical flow of this water, 
the restriction and flow features need to be defined beyond the flow. even if 
mapping them (for the most part) is not necessary for most people. we have dams 
and weirs for larger objects, and the flow_control key proposal for more 
man_made water controlling objects. 

Javbw


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Re: [Tagging] Feature Proposal - RFC - Tag:tourism=camp_pitch

[Joseph Eisenberg]

> How do you handle sites that accept both caravans and tents on different
> pitches?
>

I believe you may be thinking about how to choose between tourism=camp_site
vs tourism=caravan_site for a dual-use campground or campsite. I would use
camp_site if it is mostly used for tent camping and caravan_site if it is
mostly used for RVs/caravans.

This new tag is about individual pitches (British English) and can be used
for a caravan spot or a tent location.

How do you handle area within such a site that accept both caravans and
> tents?  Some
> parts of a site are for caravans only, with hard standing.  Other parts
> are just an area of
> grass where you can put a caravan or a tent.
>

The proposed tag tourism=camp_pitch can be used for either type: a tent
pitch or a caravan pitch.

There was a separate proposal that includes some additional tags that can
be used to specify if the camp_pitch is used for caravans or tents, but I
have not updated that proposal yet:

https://wiki.openstreetmap.org/wiki/Proposed_features/Key:camp_pitch

If tourism=camp_pitch is approved, we can then consider which new
attributes or subtypes are needed.

>
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