I'm not an expert on either of these data sets, but I know enough to say that USGS sponsored the development of the NHD, largely to replace the old digital line graph (DLG) products. NHD serves as a multi-purpose inventory of surface waters, grouped by watershed. OTOH, FWS sponsored development of Natl Wetlands Inventory, largely as a basis for habitat suitability. The data may overlap, but they serve two different purposes/missions.
SEJ ---- "Wretches, utter wretches, keep your hands from beans." -Empedocles On Thu, Aug 12, 2010 at 12:12, Ian Dees <[email protected]> wrote: > I wonder if our friends at the USGS know about this data. If they do, there > must be a good reason why they aren't using it for NHD, since I was under > the impression that NHD was the authoritative dataset for waterways in the > US. > > > On Thu, Aug 12, 2010 at 10:46 AM, Nathan Edgars II <[email protected]>wrote: > >> I'm wondering if anyone has any experience with the National Wetlands >> Inventory: http://www.fws.gov/wetlands/ >> At first glance it looks like better-quality data than the NHD for >> both wetlands and water. >> > > _______________________________________________ > Talk-us mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-us > >
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