korkeusmerkinnät

Korkeusmerkinnät, known in English as elevation markers or benchmarks, are fixed points on the ground whose height above a reference datum has been accurately determined. These markers are crucial for surveying, construction, and mapping purposes, providing a consistent basis for measuring elevations across a region or project. Typically, korkeusmerkinnät are made of durable materials such as metal discs embedded in concrete or stone. They are often placed in geologically stable locations to ensure their long-term accuracy.

The primary reference datum used in Finland is the Baltic Sea level, which is maintained by national geodetic authorities. Korkeusmerkinnät allow surveyors to establish the precise height of any point on the terrain by comparing it to these known benchmarks. This is essential for tasks like designing infrastructure, managing water flow, and creating topographic maps. Without reliable korkeusmerkinnät, consistent and accurate elevation data would be impossible to achieve, leading to significant errors in planning and execution of projects. Regular monitoring and maintenance of these markers are undertaken to preserve their integrity and accuracy.