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Figure 29. The automatically generated watershed boundary
and DEM with flats and pit cells
Trimming a profile like the actual watershed to form a proper watershed shape does not
solve this problem. The inner flat and pit cells remain unchanged. Actually the man-made
structures are not reflected in the DEM file yet. The watershed delineation does not
coincide with the actual one. Figure 30 shows the original DEM file for Watershed SB1011. Figure 31 shows the DEM file with flow direction, stream networks, and the stream
feature arcs. Figure 32 shows the automatically generated watershed boundary, the flat,
and pit cells. The shaded area are flats or pits cells. In comparison, the LPCW DEM file
contains no flat or pit cells.
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