> From: Jaakko Helleranta.com [mailto:jaa...@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 http://nhd.usgs.gov/NHDDataDictionary_model2.0.pdf 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. http://nhd.usgs.gov/userGuide/Robohelpfiles/NHD_User_Guide/Feature_Catalog/H 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 ftp://nhdftp.usgs.gov/DataSets/Staged/SubRegions/PersonalGDB/HighResolution/ or ftp://nhdftp.usgs.gov/DataSets/Staged/SubRegions/FileGDB/HighResolution/ 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. _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
