[Talk-us] US Hydrographic Data

Karl Newman siliconfiend at gmail.com
Thu May 1 18:17:50 BST 2008


On Thu, May 1, 2008 at 10:10 AM, Ian Dees <ian.dees at gmail.com> wrote:

> I e-mailed the folks at the NHD about obtaining all the data for the US in
> one chunk. They responded:
>
> --------------
>
> We offer full national coverage of the NHD database on DVD. This includes
> all medium resolution, and available high resolution NHD.  This
> is a April 2008 snapshot of the database. We have two versions of national
> exports, SDE 9.1, or shapefiles.
>
> ArcSDE 9.1 Exports:  8.6 GB on 2 DVDs, requiring 20 GB of space when
> unzipped
> Shapefiles:  17 GB on 5 DVDs, requiring 42 GB of space when unzipped and
> untarred
>
> ----------------
>
> I will ask them to send the DVDs and post the data online if we are
> interested in uploading it as a dataset.
>

That would be awesome. Maybe we could rip out the TIGER hydrographic
features and replace them with the NHD stuff. Maybe coastlines, too? I guess
we'd have to be careful about duplicating/overwriting people's work, though.

Karl
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