Bathymetric survey

Bathymetry is the study of underwater depth of lake or ocean floors. Bathymetric surveys allow us to measure the depth of a water body as well as map the underwater features of a water body.  Multiple methods can be used for bathymetric surveys including multi-beam and single-beam surveys, ADCPs, sub-bottom profilers, and the Ecomapper Autonomous Underwater Vehicle. We use bathymetric surveys for many different types of research including flood inundation, contour of streams, reservoirs and also for projects on water such as floating solar farm or offshore project such as wind farm power project.

A multi-beam echo sounder attached to a boat sends out a wide array of beams across a “swath” of the waterbody floor. As the beams are bounced back from the waterbody floor, the data is collected and processed. The processed data can be viewed in real time on the boat during the survey. Multi-beam surveying is generally done in larger water bodies.

Rather than sending out a wide set of beams, single-beam bathymetry measures the water depth directly under the boat. Single-beam surveys are generally used for smaller water bodies.

GOSCO has well trained topographical engineers with many years of experience in the field of construction consultancy, construction survey (especially experienced in the survey work for power projects including thermal electricity, wind power, hydropower, solar power…), combined with modern equipment such as single-beam echo sounder, two-frequency GSP (RTK), total station equipment, electronic levelling equipment, we ensure to provide high reliability bathymetry services, meeting urgent projects with competitive costs.