Cartography and Cadastre Bureau

Declaration：

The map information provided on this website and its webpages, including but not limited to building names, street names, house numbers, and thematic data, is compiled and processed based on field surveys and information collected from government departments/competent authorities. This information may contain inaccuracies, omissions, or delays in updates. Its accuracy is intended for reference purposes only and should not be relied upon as a basis for decision-making or action. The Cartography and Cadastre Bureau have no juridical responsibility for any consequences on using such information. For more applicable information on engineering design and construction, please send your request to the Cartography and Cadastre Bureau.
The Cartography and Cadastre Bureau has endeavoured to ensure the accuracy of the contents of this website, however, information and materials contained in this website are provided on an "as is" and "as available" basis which the Cartography and Cadastre Bureau will not provide any guarantee.

Introduction：

The Macao Vertical Datum refers to the Macao mean sea level calculated by the data collected from the original tide gauge station at Má Káu Séak in 40 years between 1925 and 1964 and has been hitherto used ever since. The original benchmark was originally located next to the "Má Káu Séak Observatory" which is now the vicinity of the junction where Avenida 1º de Maio and Avenida do Dr. Francisco Vieira Machado meet. Later, in response to urban development, the tidal data has been recorded by the tide gauge situated at Inner Harbor since 1984, and the original benchmark of the elevation system was moved to in front of the A-Ma Temple. The map data and measurement results produced by the DSCC are based on the above-mentioned elevation system.

Level Points

Explanatory Notes on Geodetic Datums in Macao Special Administrative Region