[Tagging] River crossing grade

[Andrew Harvey]

Lots of great feedback so far.

1. I agree that numeric values aren't ideal, I couldn't work out good term
values initially but many good ideas here that I'm working through getting
into the proposal.

Broadley as a data consumer I'd like to know if it's:

- completely dry (ie. only wet after rains and usually a dry creekbed)
- can I step across the whole waterway
- will by shoe soles/outside of shoes get wet but not my socks (can vary
depending on what kind of shoes you have)
- will by socks get wet, but I can take my shoes off and have dry
pants/shorts/upperbody
- will my upper body get wet, but you can still walk and don't need to swim
- do you need to swim

2. I think there is value in a grade which can be used in conjunction with
the existing depth tag. Depth is good for places that have depth gauges
where you can determine usual extents, but for less built up creek or river
crossings which don't have a gauge, both surveying a grade (as proposed) is
easier, and data consumers may prefer a grade rather than depth. So I see a
place for both tags in parallel.
3. This proposal doesn't change anything relating to use of the ford key,
you can continue to either use or not use ford=yes, that's a completely
different issue. I'm proposing a narrow tag for the grade of
a pedestrian stream or river crossings.
4. This proposal is only about pedestrian crossings, you'd want a different
tag for vehicle crossings.

On Wed, 26 Jan 2022 at 21:56, Andrew Harvey <andrew.harvey4 at gmail.com>
wrote:

> I couldn't see anything on the wiki about river crossings grade so I
> started drafting a proposal
>
>
> https://wiki.openstreetmap.org/wiki/Proposed_features/Pedestrian_river_crossing
>
> Feedback or comments or help on it is most welcome.
>
> # Rational
>
> Particularly on hiking trails, the intersection of a highway=footway or
> highway=path and a waterway=* can be defined as either:
>
> - A bridge bridge=yes which allows you to walk over the watercourse.
> - A culvert tunnel=culvert which takes the water through a tunnel
> underneath the walking path.
> - Stepping stones ford=stepping_stones which allow you to walk through the
> watercourse without usually getting wet (unless the water level is higher
> than the stepping stones, this tag doesn't imply you'll always be able to
> get across)
> - A generic stream/river crossing ford=yes where your path passes through
> the watercourse.
> In the last case of ford=yes it can be helpful to describe the usual
> condition of that stream/river crossing to help give consumers an idea of
> what they can generally expect.
>
> Mindful that conditions can change depending on upstream rainfall, or it
> could vary seasonally, but for places where it's usually consistent, this
> proposal proposes tagging it.
>
> # Proposed Tagging
>
> 0. creek/stream crossing where generally the creekbed is dry and you won't
> get wet.
> 1: creek/stream crossing where generally the water level is so low that
> you won't have water ingress in your shoes
> 2: creek/stream crossing where your body will stay dry but you'll want to
> take your shoes off if you prefer to keep them dry
> 3: river crossing where your body will get wet, may have a rope to help
> you cross, but you can wade through the water and won't usually need to swim
> 4: river crossing where you'll need to swim across
>
>
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