Taiwan level origin

Ministry of Interior establishes the new Taiwan level origin. It is the basis for height control points system. It is used to carry out class 1 level survey work. It is the source of all level reference points. It uses dual level origin design. One is the main point (K999). It is an underground point. Another is the secondary point (K999). It is a surface point. They are all located in the Sea Gate Park of Keelung. The height of the level origin uses orthometric system. It uses the Keelung average seawater surface level as reference basis. It is the base used to establish the Taiwan height base (TWVD2001).

Taiwanese Origin of Leveling

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