World Hydrography Day

World Hydrography Day, observed annually on June 21, recognizes the importance of hydrography—the science of measuring and mapping bodies of water like oceans, seas, and rivers. It highlights the vital role hydrographers play in navigation safety, environmental protection, and resource management. Accurate water maps support maritime activities, help prevent accidents, and enable sustainable use of water resources. The day also raises awareness about the need for precise data in addressing challenges such as climate change, flooding, and marine conservation, emphasizing the importance of hydrographic services worldwide.