Hydrographic surveys are undertaken to determine depths of water bodies and their
underlying topographies. Using a variety of geophysical sensors, these surveys also provide
valuable information about debris, objects on the seabed or buried below
the surface, or the thickness of sediment layers.
 

Topo India is an early adopter of the latest, proven technologies. This means we have tried
and tested workflows that allow our surveying teams to work smarter and more efficiently. The
benefits of using hydrographic surveys encompass:
• seabed bathymetric (depth measurement)
surveys and digital terrain models (DTM)
for navigation assessment and under-keel
clearance.
• support for dredging operations.
• determining sedimentation levels or
thickness.