This post converts the selected engineering video into a quick written workflow so the user can understand the process before opening the full video. It is designed as a time-saving overview for students, engineers, and website visitors.
Step-by-step workflow
- Define the area of interest and required resolution before downloading.
- Choose a DEM source suitable for the analysis scale.
- Download tiles covering the full project area plus buffer.
- Mosaic tiles if needed and clip the DEM to the study boundary.
- Check projection, vertical units, no-data gaps, and unrealistic pits.
- Use the DEM for contours, slope, catchment, hillshade, or Civil 3D surface.
Best use case
This is the starting point for contour generation, watershed delineation, slope maps, landslide studies, preliminary route studies, and hydropower planning.
Quality check
Do not directly trust a DEM just because it loads in GIS. Check resolution, voids, vertical datum, and whether the terrain matches known river valleys.
Recommended output
By the end of this workflow, the user should have a clean engineering output such as a map, terrain product, hydraulic model setup, water-level result, or project concept figure that can be used in reports and presentations.
Time-saving note
Read this page first for the workflow logic. Then open the video only for the detailed screen clicks, software interface steps, and practical demonstration.