As a basis for planning work and a hydropower plant building project a local reference system and uniform topographic maps had to be generated for the entire project.
The surveying work was carried out with two methods, a detailed terrestrial measurement (polar method) and a static GPS measurement.
- Creation of a local reference system by the determination of fiducial points
- Topographic surveying within the local reference system
- GPS determination of at least three control points for the transformation of the local reference system to a higher level system
- Determination of water level measuring stations for the canal