Hmm. It sounds like we want the "routability" of the NHD reach-code system with the accuracy and completeness of the Wetland Inventory.<div><br></div><div>I wonder if there's some "gotcha" in the FWS dataset that would make it inappropriate to use. For example, I see a lot of freshwater areas that are really inundation/flood control areas in my area. It would be difficult for an import to tell the difference between those two things.<br>
<br><div class="gmail_quote">On Thu, Aug 12, 2010 at 11:35 AM, Steven Johnson <span dir="ltr"><<a href="mailto:sejohnson8@gmail.com">sejohnson8@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">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.<br>
<br clear="all">SEJ<br>----<br>"Wretches, utter wretches, keep your hands from beans." -Empedocles<br><br>
<br><br></div><div class="gmail_quote"><div class="im">On Thu, Aug 12, 2010 at 12:12, Ian Dees <span dir="ltr"><<a href="mailto:ian.dees@gmail.com" target="_blank">ian.dees@gmail.com</a>></span> wrote:<br></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div><div></div><div class="h5">
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.<div>
<div></div><div><br>
<br><div class="gmail_quote">On Thu, Aug 12, 2010 at 10:46 AM, Nathan Edgars II <span dir="ltr"><<a href="mailto:neroute2@gmail.com" target="_blank">neroute2@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
I'm wondering if anyone has any experience with the National Wetlands<br>
Inventory: <a href="http://www.fws.gov/wetlands/" target="_blank">http://www.fws.gov/wetlands/</a><br>
At first glance it looks like better-quality data than the NHD for<br>
both wetlands and water.<br></blockquote></div>
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