I am trying to identify any lands that drain from private land to public
land. In this case the public land is mostly a ridgetop, but there are
areas of private land that do drain into public land.
Does anybody have any suggestions as to how to do this.
First I found all the watershed subbasins that are on the edge of the
public land.
Now I want to be able to find the lowest elevation point *in each
subbasin* so that I could use that point to determine the
more specific catchment area (using the old r.watershed3.0,
i presume). I am tyring to think of a way to mask the elevation file
with the public land boundary, and then use r.mapcalc to find the minimum
elevation value in each subbasin *at that boundary*
Any suggestions, or alternatives would be greatly appreciated.
Thanks
Jim Klein
lkla@netcom.com
703-739-0972