[talk-au] Vicmap Hydro and OSM

[Little Maps]

I can’t speak to anyone's future plans, but the Vicmap Hydro dataset has not been imported to date. Generally we have only a small subset of the creeks (streams) that are in Vicmap Hydro. I did a lot of work last year joining disconnected waterway sections in Victoria, and adding name tags. From memory, nearly all rivers and streams mapped in OSM are now joined, so one can plot, for example, all mapped creeks that flow into the catchment of a major river, or that flow to the coastline, using an overpass turbo query. I think nearly all watercourses that have river in their name (eg Macalister River) are mapped in OSM too, and all sections of these have a name tag. (I might be over-estimating their completeness perhaps, but it’s pretty easy to test using overpass). 

The accuracy of waterways in osm varies greatly, some are very precise, others very vague. Some were traced from the VicMap Hydro Lite layer (I can’t remember its precise name), which is appalling. Please don’t use this layer. From memory, nearly all sections of named rivers flow in the right direction too now. I can’t remember if this is true for smaller creeks.

As Tom said, it would be a huge task to import the Vicmap Hydro layer into the existing OSM map, due to the huge number of joins required. 


> On 13 Jan 2025, at 8:23 pm, Mark Rennick <mark.b.rennick at gmail.com> wrote:
> 
> Being a regular user of OSM data and occasional editor of minor amendments, mostly in Victoria, and given the recent interest in NSW stream and river data import I am curious to know if the total import of Victorian hydro related features has ever been contemplated or undertaken.
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