As nice as it would be to have a single reliable and up-to-date source of truth for coastline data. the OS maps arent it.

osm.wiki/Ordnance_Survey_OpenData
The wiki page already states:
"1. Don't assume the OS data is either correct or up to date. Use it as a guide and additional resource for your mapping, not a replacement."

In addition to that and like I said before. The MHWL data contains plenty of errors and are years out of date in some places.

To show a select few examples:

Ghost islands:
https://media.discordapp.net/attachments/782593988611014676/1163366536824758342/image.png
https://cdn.discordapp.com/attachments/718028525021429832/1163390964262502430/image.png

Missing islands:
https://cdn.discordapp.com/attachments/718028525021429832/1163363295357583440/image.png
https://cdn.discordapp.com/attachments/718028525021429832/1163363291066806292/image.png
https://cdn.discordapp.com/attachments/718028525021429832/1163395822243823686/image.png

Out-of-date coastlines:
https://cdn.discordapp.com/attachments/718028525021429832/1163364623404236800/image.png
https://cdn.discordapp.com/attachments/718028525021429832/1163364622347272212/image.png
https://cdn.discordapp.com/attachments/718028525021429832/1163364621286113340/image.png

All of these are very clearly in error and show that the OS data isn't foolproof and should not be relied on as the sole source of coastline data.

Well thats just rude. Undoing someone's work because they're not using the data source you want them to.

So there is no OS data available thats more accurate and up to date? Thats a shame. I'll try looking at the OS maps a bit more often. But I'm not going to blindly trust it when I have more detailed and more recent visual imagery available to me.

As for the admin boundaries. I map terrain, things that exist "on the ground". Right now I try not to touch them and basically pretend they're not there. Which sometimes leads to inconsistencies when editing pieces of coastline that have admin boundaries attached to them. So if you have a suggestion there, as to whats the best way to deal with those cases, that would be welcome.

I've tried using the OS OpenMap Streetview/Local maps in the past, but have found them to be pretty outdated and innacurate at times. Especially near Saltmarshes. So I've mostly been using satellite imagery.

Its not too bad. You can make pretty accurate guesses, especially when you're using multiple different layers. But it does always have leave amount of error yeah.

If you have a more up-to-date or accurate coastline imagery URL I could use, that would be highly appreciated.

Sincerely,
Taya

I mostly just use bing imagery. But esri wayback serves as a good backup tool sometimes. Plus its great for determining low tide features.

Je hebt gelijk. Was denk ik nog niet helemaal wakker. Zal dit morgen even aanpassen als niemand mij voor is.

Seems to be some sort of bird feeder you can pay for? https://www.youtube.com/watch?v=_-SQ-0JIm4o&t=28047s

So just some low effort crypto spam that can be removed.

I map a random island for fun and come back 3 days later to see a dozen new changesets and many additional details mapped. Impressive.

Met deze changeset kan note/3667583 ook op resolved gezet worden. Nice

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