When is World Hydrography Day?

World Hydrography Day, on June 21st, emphasizes the importance of surveying and charting bodies of water. The day also encourages the general public to learn more about hydrograph science.

It's a well known fact that 71 percent of the earth is covered with water. Although most of the earth's water is found in oceans, rivers, swamps, glaciers, and aquifers, the majority of the water is also found in lakes, rivers, swamps, glaciers, and aquifers. In the form of water vapor, it also exists in the air. Water is essential for a variety of reasons. Without water, humans, and animals could not survive. We also use water for irrigating crops, keeping the environment clean, and providing recreational opportunities.

Water also plays a vital role in transportation. Scientists need to know how to navigate the earth's waterways, so scientists find out specific details. Ships and other vessels can navigate the waters safely and efficiently with this information. This falls under the science of hydrography.. The details these scientists are looking for include: The following links are links to the following: The information these scientists are looking for includes:

• Water depth
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