[Talk-us] US National Hydrography Dataset

[Matthew Perry]

On Jan 27, 2008 7:28 PM, Russ Nelson <nelson at crynwr.com> wrote:
> Adam Schreiber writes:
>  > I ask because a lot of the east coast I've imported includes rivers as
>  > a matter of getting the coast right.
>
> Yeah.  I think you'd be surprised by how far upstream the coast goes.

The definition of coast vs. riverbank become a bit fuzzy in those cases ;-)

I think, for the most part, the NHD dataset cuts of the Flowlines at a
reasonable point at the river's mouth which will hopefully correspond
more or less to the coastlines. The only way to tell for sure is to
download some NHD datasets for a basin you're familiar with and check
it out. Or use the NHD interactive map.


-- 
Matthew T. Perry
http://www.perrygeo.net

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