The DEM optimization operation enables you to 'burn' existing drainage features into a Digital Elevation Model (DEM), so that a subsequent Flow direction operation on the output DEM will better follow the existing drainage pattern.
The DEM optimization operation offers the following possibilities:
- Gradual drop of (drainage) segments in the output DEM, over a certain distance to the (drainage) segments.
- Gradual raise of (watershed-divide) segments on the output DEM, over a certain distance to the (watershed-divide) segments.
- Additional sharp drop or raise of segments on top of the gradual drop or raise.
- Simple drop or raise of polygons in the output DEM.