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
- Download DEM and clip it around the project area with a buffer.
- Fill sinks or preprocess DEM so flow routing becomes stable.
- Generate flow direction and flow accumulation products.
- Identify the outlet point and snap it to the highest-flow cell.
- Run watershed or basin delineation from the corrected outlet.
- Calculate area, inspect boundary, and compare with topo/river network.
Best use case
Useful for hydropower intake catchments, flood estimation, drainage design, rainfall-runoff modeling, and basin maps.
Quality check
The most common error is placing the outlet slightly away from the real river cell. Always snap the outlet to the flow accumulation channel.
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.