[Talk-us] [Imports] What to do with unnamed NHD streams
penorman at mac.com
Mon Oct 29 15:36:48 GMT 2012
> From: Jaakko Helleranta.com [mailto:jaakko at helleranta.com]
> Sent: Monday, October 29, 2012 5:52 AM
> To: Paul Norman
> Subject: Re: [Imports] What to do with unnamed NHD streams
> Hi Paul,
> Where can I get my hands on this data / its documentation?
> I'm actually most interested about the documentation (for different than
> this import reasons) but could try to take a look at the data too (.. If
> I know/can figure out how to).
Frequently I end up having to search for a particular FCode online to find
the relevant docs.
NHD 2.0 has the data model (but not FCodes) described at
NHD 2.1 has a poster at http://nhd.usgs.gov/NHDv2.1_poster_3_23_2012.pdf but
it does not fully describe some of the FCodes.
ydrography_Dataset/Complete_FCode_List.htm is the most complete FCode list
although the descriptions are often very terse.
The pre-staged data is at
I've found that looking at the documentation alone is not ideal. There are
subtle oddities to NHD that you will only pick up by examining the data.
The comments in
https://github.com/pnorman/ogr2osm-translations/blob/us_nhd/us_nhd.py are my
notes which might be somewhat helpful.
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