[Talk-us] NHD Dataset
Theodore Book
tbook at libero.it
Mon Feb 16 15:37:05 GMT 2009
I think it would be great to get it all in as soon as possible. I do
see a few limiting factors, though:
* In some places, a lot of work has been done manually entering water
features. While I expect the NHD data is generally better, we have the
tough issue of respecting other people's work (and not duplicating
things in the database)
* The upload speed seems to be a limiting factor - it is taking me some
70-80 hours to upload the one basis with bulk_upload.pl. I am not sure
how many basins there are in the country, but it seems as though it
could take a year if it were all done sequentially.
* The scripts I used to convert the shapefiles to OSM only supported the
features I found in this one basin. They should be easy to extend, (or
someone else may have better ones), but they would need to be tested.
Theodore
Ian Dees wrote:
>
>
> On Mon, Feb 16, 2009 at 9:00 AM, Theodore Book <tbook at libero.it
> <mailto:tbook at libero.it>> wrote:
>
> If you haven't been following the wiki page, I have been doing some work
> on the NHD dataset, and feel that I have gotten a decent OSM conversion
> of the Etowah river watershed (north and northwest of Atlanta). I am
> going ahead and uploading that basin. If you are interested in the
> conversion, it would be great if you could take a look at it and give me
> any feedback you may have. Thanks.
>
>
> Excellent work! I think the next step is to list all of the subbasins
> and start converting/importing.
>
> What is everyone's opinion on waiting for the API 0.6 upgrade? I'll bet
> we could sneak in a complete import before...
>
> Also, do we want to have individuals make requests for data via the NHD
> website or should I make another DVD-data-dump request to the NHD folks
> and import the whole thing at once?
>
>
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