Geodetic Survey of Hong Kong

Welcome to Geodetic Survey Information Main Page

The Geodetic Survey Section is mainly responsible for maintaining and densifying a network of accurate survey control points that covers the whole territory of the Hong Kong SAR. This network provides the fundamental horizontal and vertical position reference for many vital activities, such as mapping, land boundary survey, land administration, building, infrastructure project, railway development, town planning, new town development, environmental protection, safety management of navigations in the air and the sea, and etc. Moreover, the Geodetic Survey Section is also responsible to maintain baselines for EDM/GPS calibration and steel band standardization.