Tidal Information
Tidal Products & Publications
For more information on our range of tidal products and publications, please see our Products & Services Publications page or indivdual publications below:
Survey Operations Support
The AHO Tides and Geodetic section determines sounding datum levels for RAN and HIPP Hydrographic surveys. This includes but not limited to providing tidal heights predictions and model reduction method for survey areas using tidal and geodetic collected during the survey.
Hydrographic Office Cartographic Support
Accurate charts cannot be compiled without tidal information. The AHO Tides & Geodetic section determines an appropriate Chart Datum for every chart, supplies tidal and tide stream information for charts, and determines if and where tidal stream information should be shown.
Tidal Information Service
There is a considerable demand for tidal information - especially predictions. The range of requests handled by the AHO Tides & Geodetic section is diverse, supporting such things as offshore resource exploration, scientific study and general inquiries from the public. Simple inquiries can often be addressed quickly and at little or no charge. More complex inquiries or access to certain tidal information will require a formal request and may incur charges or the need to take out a licence.
Lunitidal Intervals
All locations listed in the Australian National Tide Tables can be found on the Lunitidal Intervals page.
Tidal Glossary
There are many words and terms that are used in hydrographic circles. Here is a concise list of terms and their definitions: