Figure 4.18: Points, Breaklines, and Bounding Polygon in WMS
Once the triangles were turned on again, the polygon marking the boundary around Area 2 was selected, and under feature objects the create TIN
command was selected.
The TIN options selected
Once the TIN was conditioned and free of pits and flat triangles, the TIN was used to delineate the drainage network. Figure 4.19 shows the TIN for Area 2 after it has been interpolated off the 30 meter DEM surface. Once the TIN is ready to be delineated, the user must add an outlet so that the basins may be defined.