Hydro
Services
Hydro Services
Hydrographic Survey Services
We have been providing bathymetric survey solutions to our clients for the last 40 years and have seen the industry change drastically. We started in the time of hand drawn maps and trisponders and now look forward to the future of hydrographic surveying using the latest GNSS and echo-sounding technologies. We have been involved in dredging campaigns across the UK, Ireland and Europe and have worked closely with all the leading dredging contractors. Among our capabilities are the following:
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High Resolution Multibeam
High-Resolution Multibeam is a sonar-based hydrographic mapping technique that uses multiple acoustic beams to capture detailed bathymetric data of the seafloor. It is widely used in marine geology, habitat mapping, and underwater navigation to produce high-precision topographic maps and detect underwater features.
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Geophysical Services
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Single beam
Single-beam surveying is a remote sensing technique that uses a single acoustic pulse to measure depth and profile the subsurface in a straight-line path. It is commonly used in hydrographic surveys, sediment mapping, and shallow water studies for basic bathymetric data collection and underwater feature detection.
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Geophysical Services
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Side scan sonar
Side-scan sonar is a geophysical method that uses acoustic waves to create detailed images of the seafloor and underwater structures by measuring the intensity of sound reflections. It is widely used in marine archaeology, underwater mapping, and search-and-recovery operations to detect objects, shipwrecks, and seabed features.
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Geophysical Services
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Magnetometer
A magnetometer is a geophysical instrument used to measure variations in the Earth’s magnetic field to detect subsurface anomalies. It is widely used in mineral exploration, archaeology, and environmental studies to locate buried objects, geological structures, and magnetic minerals.
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Geophysical Services
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River bed surveys, including river velocity
Riverbed surveys, including river velocity measurements, are conducted using hydrographic techniques such as single-beam and multibeam sonar, ADCP (Acoustic Doppler Current Profiler), and LiDAR to map the riverbed topography and analyze water flow dynamics. These surveys are essential for hydrological studies, sediment transport analysis, flood modeling, and environmental assessments to monitor changes in river morphology and flow patterns.
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Our Services
Geophysical Survey Services
Our in house geophysicists have a strong experience in a multitude of geophysical data processing techniques and data interpretation. We conduct geophysical surveys to aid your engineering project, reducing cost and risk.
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Near shore reflection seismic surveys
Nearshore reflection seismic surveys are geophysical techniques used to image subsurface structures beneath shallow coastal waters by analyzing reflected seismic waves. These surveys are commonly applied in marine geology, offshore engineering, and environmental studies to map sediment layers, identify faults, and assess seabed stability for infrastructure projects such as ports, pipelines, and wind farms.
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Geophysical Services
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Near shore refraction seismic surveys
Nearshore refraction seismic surveys are geophysical techniques used to determine subsurface geological structures in shallow coastal areas by analyzing the travel times of refracted seismic waves. These surveys are commonly used in geotechnical investigations, coastal engineering, and marine geology to map bedrock depth, sediment thickness, and subsurface layering. They are essential for infrastructure projects such as harbors, offshore wind farms, and coastal erosion studies, helping assess seabed stability and material composition.
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Hydro Services
Marine Environmental Survey Services
In todays word environmental monitoring has never been so important. We provide a combination of data acquisition, project management, survey and consultancy services. We have an in depth knowledge of Irish Dumping at Sea legislation and permitting and have successfully procured a number of licenses for our clients.
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ADCP and direct style current metering, static and transect style.
ADCP is a hydrographic instrument that measures water velocity profiles using sound waves (Doppler effect). It is widely used in rivers, estuaries, and coastal waters for flow analysis.
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Geophysical Services
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Turbidity monitoring, transect and fixed buoy style.
Turbidity monitoring measures the concentration of suspended particles in water, typically using optical or acoustic sensors. It is essential for water quality assessments, sediment transport studies, and environmental monitoring in rivers, lakes, estuaries, and coastal areas.
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Geophysical Services
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Temperature and salinity measurements.
Measures conductivity (used to derive salinity), temperature, and depth (pressure) as it is lowered through the water column.
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Geophysical Services
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Tidal recording and tidal prediction.
Tidal recording involves measuring sea level changes over time using tide gauges, while tidal prediction uses historical data and mathematical models to forecast future tide levels for navigation, coastal management, and flood prevention.
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Geophysical Services
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Trusted by
Our Clients Say
WORK WITH US
Sorensen Civil Engineering has used Hydro Survey on many of our marine and land-based projects. Hugh and is team have and continue to provide an excellent service and are extremely professional in their project delivery.
— Brian Snow
Operations Director | Sorensen
We engaged Terra Survey to undertake an extensive geophysical survey of existing flood defences predominantly to the west of Limerick City. We were particularly interested in understanding the depths of any soft soils and the potential presence of karstic features in the bedrock. Terra Survey reviewed our proposed survey and advised on tweaks to optimise the survey to ensure we gathered all of the required information. Terra Survey’s site team undertook the survey promptly in very challenging terrain. The report produced by Terra Survey on completion of the fieldworks was to a very high standard. We were delighted with Terra Surveys inputs to the project and we look forward to working with them again in the near future.
— David Mills
Principal Engineer | RPS