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 _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
