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World Hydrography Day 2023

The Indian Naval Hydrographic Department will observe World Hydrography Day (WHD) on June 21, 2023.

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What is Hydrography?

In the scientific field of hydrography, the physical features of lakes, rivers, coastal areas, and oceans are measured and described. Predicting how these qualities will evolve over time is another aspect of it. Hydrography’s main goals are to support diverse marine activities like economic growth, security and defence, scientific research, and environmental conservation while ensuring the safety of navigation.

Hydrography facilitates the exploitation of resources such as fish and minerals while enabling effective environmental protection and management. It also involves establishing national marine spatial data infrastructures, enhancing maritime defense and security, conducting tsunami flood and inundation modeling, and advancing marine science.


The Indian Naval Hydrographic Department will observe World Hydrography Day (WHD) on June 21, 2023. A variety of events were planned by the National Hydrographic Office (NHO) in Dehradun to honour WHD.These initiatives aim to raise awareness about the crucial role of hydrography in ensuring safe marine navigation, promoting sustainable marine development, and achieving the Blue Economy goals of the Indian government, which involve protecting our oceans and coastal areas.


World Hydrography Day this year will focus on “Hydrography: Underpinning the Digital Twin of the Ocean.” This subject emphasises the critical function of hydrography in facilitating the digital transformation of maritime ecosystems and is consistent with the development of virtual representation.

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The International Hydrographic Organization (IHO) approved and implemented World Hydrography Day as an annual celebration in 2005. The resolution acknowledged the establishment of World Hydrography Day by the IHO to be observed every year on June 21st. The inaugural World Hydrography Day took place on June 21, 2006. The International Hydrographic Organization (IHO) underwent a renaming in 1970.

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