[Talk-us] Water Areas (NHD)

Christopher Schmidt crschmidt at metacarta.com
Sun Jan 11 02:47:20 GMT 2009


On Sat, Jan 10, 2009 at 08:20:01PM -0600, Ian Dees wrote:
> On Sat, Jan 10, 2009 at 8:06 PM, Christopher Schmidt <
> crschmidt at metacarta.com> wrote:
> 
> >
> >  1. How badly does it screw up an NHD import if I upload Mass data from
> >    a different source?
> 
> 
> It won't screw it up I don't think. We would just refrain from
> converting/importing the subbasins that MassGIS covers.
> 
> 
> >
> >  2. Who is working on NHD?
> 
> 
> I am. There was some interest earlier from otheres, but I haven't heard
> anything in a while.
> 
> 
> >
> >  3. If I help with NHD, what is the timeline before I can get
> >     Massachusetts data uploaded?
> 
> 
> Feel free to upload the MassGIS data whenever you want. I can convert the
> Massachusets NHD data and send it your way if you want. You could then
> compare it to what you get from your MassGIS conversion?
> 
> >
> >  4. How the heck can I find data to start playing with -- especially
> >    local data?
> >
> 
> NHD data is accessible by going to the data viewer (http://nhdgeo.usgs.gov/),
> then by clicking on the extract tool on the left and dragging a bounding box
> to specify which subbasins you want the data for. A window will pop up where
> you can specify that you want high-resolution data in Shapefile format.
> Don't select the "fill in flowlines", put your e-mail in, and you'll get an
> e-mail when its extracted.

Wow. How... 'interesting'. :) Thanks; I've given a shot. I'll put
together a WMS with both side by side and see the difference. Maybe bth
will be needed, in the end. 

Regards,
-- 
Christopher Schmidt
MetaCarta




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