Important Notices

Disclaimer

The information provided by the Government of the Hong Kong Special Administrative Region ("the Government") on this website ("the Government's information") is for reference only. Whilst the Government endeavours to ensure the accuracy of the Government's information on this site, no express or implied warranty is given by the Government as to the accuracy of the Government's information.

This website also contains information input by other parties and users may link this site to other sites and obtain information provided by other parties (collectively called "the other information"). The Government expressly states that it has not approved nor endorsed the other information contained in or in connection with this site.

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Accuracy of Prediction

The tidal stream prediction made by Hong Kong Tidal Stream Prediction System is based on the tidal components generated from the updated Hong Kong Tidal Atlas model. The tidal components consist of amplitude and phase of 66 chosen tidal constituents. These predictions will deviate from the actual conditions in the field since temporal and localised meteorological effects and non-tidal flow variations could not be taken into account. Moreover, its accuracy further depends on the chosen tidal constituent set, accuracy of the underlying model, length of the simulation and location of the data points within the model, etc.

According to the comparison of the predicted data with the actual field observed data, the average difference in current peak magnitude ranges from 0.03 m/s to 0.21 m/s, while the average phase difference in peak velocity was about 17 minutes.

Web Accessibility Conformance Statement

We are committed to ensuring that our website conforms to the World Wide Web Consortium (W3C) Web Content Accessibility Guidelines (WCAG) 2.1 Level AA requirements to the maximum extent possible. However, as our website contains a considerable amount of multimedia, PDF, Word contents and interactive contents, not all levels of accessibility features have been incorporated. For enquiry, please email us at hydro@mardep.gov.hk. We will try our best to provide the information in a format accessible to you.

Copyright Notice

The information available within this website may be re-disseminated or reproduced, provided that the Hong Kong Hydrographic Office of the Marine Department, as the source of information, is acknowledged and that the re-dissemination or reproduction is for non-commercial use.

Any other reproduction, adaptation, distribution, dissemination or making available of the information available within this website for commercial use is strictly prohibited unless prior written authorization is obtained from the Hong Kong Hydrographic Office of the Marine Department.

The Hong Kong Hydrographic Office of the Marine Department and the HKSAR Government shall not accept any responsibilities for any loss or damage arising from the information, or reproduction or re-dissemination of the information, within this website.