Hydrography is the technique of determining ground profile of underwater area. The primary purpose is to estimate water depth. As compared to land surveys that uses static equipment, bathymetry involves a dynamic observations. In this methodology, the water depth measuring instrument (sounders or LiDAR) and position device (GPS) is installed on floating base which captures position and depth simultaneously to generate under water ground model. The errors pertaining to heaving, pitching and yawing are corrected to generate accurate output.
- Lake and reservoir surveys
- Environmental surveys
- River and Ship Channel surveys
- Dredging survey – Pre and Post Dredge
- Volume Calculations
- Erosion sites