On Sat, Jan 10, 2009 at 8:06 PM, Christopher Schmidt < crschm...@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. I have 6 DVDs with the nation's NHD data on it from a few months ago, so I was planning on using that to start the conversion (as opposed to doing extracts from the website for each chunk).
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