[talk-au] Correcting inland water features

Andrew Harvey andrew.harvey4 at gmail.com
Wed May 16 13:26:14 UTC 2018


Agreed with Warin and Ewen.

I'd like to point out the AGRI imagery [1], yes it's old (2006-2011), black
and white, and missing parts of the imagery due to cloud and seams, but it
may help as an extra source to compare. It's good enough to make out rivers
and it should be accurate positionally since it was validated with ground
surveys. CC BY 4.0 and usable in OSM from the blanket Geoscience Australia
wavier[5].

GA also has a Surface Hydrology dataset [2] [3] [4] which could be used as
well.

Some features are better tagged as a wetland
https://wiki.openstreetmap.org/wiki/Tag:natural%3Dwetland. Local knowledge
is always prefered, but so long as features mapped from local knowledge are
not impacted, something mapped from other sources is better than nothing,
which can be improved further by local knowledge.

I'm interested to know more about the alignment issues when they meet the
coast, is there a specific example of where this needs work at the moment
in OSM?

PS. Microsoft's Open Maps team has similar tasks at
https://github.com/Microsoft/Open-Maps/issues/14 and
https://github.com/Microsoft/Open-Maps/issues/11

[1]
https://github.com/osmlab/editor-layer-index/blob/gh-pages/sources/australia/au/AGRIblack-and-white25m.geojson?short_path=4ca9ae8
[2]
https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/1186e898-14b5-812e-e053-10a3070a76f0
[3]
https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/12777e32-ec4f-055a-e053-10a3070a2ce2
[4]
https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search?node=srv#/metadata/123f4803-04d7-32d1-e053-12a3070a99ac
[5]
https://wiki.openstreetmap.org/wiki/File:GeoscienceAustralia_CCBY_Waiver_EmailAcceptance.pdf
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