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Depth To Rock Under Water

How To Find Depth To Rock Under Water


For developments that are close to water, or cross over or under it you’ll want to know exactly how to plan for Excavating Trenches, Dredging Bottoms, Laying Services, Horizontal Drilling & Bridge Foundations.

Ports and Harbours

Marine Surveying using Airguns

Marine Surveying using Airguns

Port and Harbour authorities routinely survey their marine areas of responsibility to maintain desired water depths, and engage dredging contractors when needed.

Minerex Geophysics can help with pre & post dredge surveys for canals and waterways, coastal regions, congested harbours, and approach channels.

Before dredging works take place we can retrieve samples or sediment cores of the material to be dredged and analyse it to determine the physical and chemical properties.

We also carry out sub-bottom profiling surveys and geotechnical investigations to investigate the depth that an area can be dredged to without resorting to rock blasting.

Marine Geophysics

Marine Geophysics is used for projects located at or near:

  • Lakes
  • Rivers
  • Canals
  • Intertidal Zones
  • The Shallow Sea

Minerex Geophysics offers surveys for marine and river projects including:

  • Bridges & Piers
  • Breakwaters & Flood Defenses
  • Harbours & Marinas
  • Plant Outfall & Intake Pipes
  • Power and Communication Cable Landfalls
  • River Channel Flood Alleviation Schemes
  • Horizontal Directional Drilling (HDD)
Seismics Surveying

Seismics Surveying

What works best…

The choice of geophysical method is the key to success in a challenging survey setting – we use seismic refraction and reflection, Schulte Waves, resistivity or magnetics to clarify the geology below the water bottom.

Water depth, tides and saline or fresh water presence are given conditions that are factored into the surveys.

Our specialty is the survey from land through the transition zone into the water with continuous geophysical data acquisition to create ground models either side of the coastline or river bank.



Does your project specification require a waterborne survey in an aquatic environment?
Click the link below to get in contact.