[Talk-us] NHD status?

Ian Dees ian.dees at gmail.com
Thu Oct 2 17:06:32 BST 2008


On Thu, Oct 2, 2008 at 10:55 AM, David Carmean <dlc at halibut.com> wrote:

>
> I think we need to be careful about the flowlines and in particular the
> artificial paths; I'm not yet convinced that any of the flowlines should
> be depicted on the map.
>
>
Artificial paths should be thought about (since they tend to contain a *lot*
of nodes, which the database doesn't like because it uses up hard drive
space), but the flowlines are needed to designate the centerlines for
rivers. When a river is too thin to exist in the NHD Area shapefiles, the
flowline is the only indication that the river exists.
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