What is your goal; what are you trying to accomplish?


On Thu, Sep 22, 2016 at 2:09 PM, Rich Shepard <>

>   The project area -- in farmland -- is small (< 20 ha) and  essentially
> flat with elevation differences less than 1 meter. The LiDAR raster cells
> (imported from ARC Grid format) have a cell size of 3x3 international feet;
> elevation resolution is 0.013 feet.
>   While r.slope.aspect generates an aspect map, the slope map is blank. The
> maps for dx, dy, and relief display variations.
>   While I have some soil data, it's sparse and I haven't (yet) found
> infiltration rates; the rainfall data is very low and from a station
> several
> miles away. I probably do not have all required input data for r.sim.water
> or r.watershed.
>   Based on your much more extensive experiences applying GRASS to limited
> areas please suggest approaches that might be appropriate for this project.
> It might be that all I can do is create detailed contour maps of the area
> and describe the situation qualitatively without robust quantitative
> analyses.
> TIA,
> Rich
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