Direction of water flow
Colored triangulations showing the directions of water flow
Watersheds
If you have any question about Autodesk Civil 3d or road design, just ask in the comment, I will be very happy to answer.
You will find in these link, videos from YouTube including how to:
Creating Alignments, Editing, Offset and Widenings, Adjusting Stations, Design Criteria, Superelevations, Labels
Click: Civil 3d alignment
You will find in these link, videos from YouTube including how to:
Creating Surfaces, Adding Break lines, Adding Boundaries, Editing Surfaces, Operations, Slope Analysis, Styles, Utilities, Labeling
Click: Civil 3d Surface