Profile

Creating an elevation profile: reading terrain along a route

9 min read June 10, 2026

An elevation profile shows how a line behaves on the ground, not just how long it is on the map. For roads, pipelines, drainage and access routes, slope can matter more than horizontal distance.

Field takeaways

A profile reads distance and elevation together.
Grade may be expressed as percent, per mille or degrees; state the unit.
DEM profiles help planning; precise work needs surveyed elevations.
Vertical exaggeration improves readability but can visually overstate slopes.
Point spacing determines how well the profile captures the ground.

What a profile shows

A 500 m line can be easy or expensive depending on elevation change. An elevation profile shows distance and elevation together, revealing ramps, dips and breaks.

Grade and elevation source

Grade is elevation difference divided by horizontal distance. State whether you use percent, per mille or degrees. DEM profiles are useful for planning; precise construction elevations need surveyed data and checks.

Vertical exaggeration

Vertical exaggeration makes details readable but can visually overstate slopes. Mention it in reports when non-technical readers will use the profile.

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Frequently asked questions

What is an elevation profile for?

It shows elevation change, grade and breaks along a route.

Is a DEM profile enough?

Good for planning; precise work needs field survey elevations.

Percent or per mille?

Use the project standard and state the unit clearly.

Is vertical exaggeration a problem?

It can mislead non-technical readers if not stated.

Technical references

The field guidance in this article is aligned with the technical and official references below.