On Wed, May 26, 2010 at 6:03 PM, Fawcett, David (MPCA)
<david.fawc...@state.mn.us> wrote:
> I have seen a Web app that allows a user to click on a map and get land use 
> information calculated for the upstream area.  It is based on some OSGEO 
> projects and is quite a cool app.

As backbone, GRASS will do that (r.watershed, now faster by a
magnitude in GRASS 6.4+).

> I have found and lost the URL to this app several times.  If this sounds 
> familiar, I would appreciate it if you could point me back there again...

Perhaps here?
http://gallery.osgeo.org/

Markus
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