Hydrography is the science of measuring and describing the physical features of bodies of water, including oceans, seas, rivers, and lakes. It focuses on mapping underwater terrain, water depths, tides, currents, and other characteristics important for navigation, construction, and environmental studies. Hydrographic surveys are the practical application of hydrography, involving the collection of detailed data about underwater features using specialized equipment such as sonar, GPS, and echo sounders.
These surveys provide critical information for safe marine navigation, the planning of coastal infrastructure, dredging operations, and environmental monitoring. By producing accurate maps and charts of the seabed and water bodies, hydrographic surveys help prevent maritime accidents, support offshore construction projects, and protect aquatic ecosystems. Overall, hydrography and hydrographic surveys play a vital role in marine safety, resource management, and sustainable development.