<div dir="ltr"><div><div>Rich,<br><br></div>What is your goal; what are you trying to accomplish?<br><br></div>Tom<br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 22, 2016 at 2:09 PM, Rich Shepard <span dir="ltr"><<a href="mailto:rshepard@appl-ecosys.com" target="_blank">rshepard@appl-ecosys.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> The project area -- in farmland -- is small (< 20 ha) and essentially<br>
flat with elevation differences less than 1 meter. The LiDAR raster cells<br>
(imported from ARC Grid format) have a cell size of 3x3 international feet;<br>
elevation resolution is 0.013 feet.<br>
<br>
While r.slope.aspect generates an aspect map, the slope map is blank. The<br>
maps for dx, dy, and relief display variations.<br>
<br>
While I have some soil data, it's sparse and I haven't (yet) found<br>
infiltration rates; the rainfall data is very low and from a station several<br>
miles away. I probably do not have all required input data for r.sim.water<br>
or r.watershed.<br>
<br>
Based on your much more extensive experiences applying GRASS to limited<br>
areas please suggest approaches that might be appropriate for this project.<br>
It might be that all I can do is create detailed contour maps of the area<br>
and describe the situation qualitatively without robust quantitative<br>
analyses.<br>
<br>
TIA,<br>
<br>
Rich<br>
<br>
<br>
<br>
<br>
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