SERVICES
Hydrographic Surveys
With a deep understanding of the constraints and challenges in gathering accurate geospatial data in rivers, lakes and canals, Murphy Geospatial can deliver geospatial certainty for flood relief scheme planning, design, construction and maintenance.
We are specialists in inshore, tidal and near-shore hydrographic surveys, delivering our data already conditioned for input into industry leading flood-modelling software.
Our highly experienced and certified team includes engineers, flood modellers, surveyors, marine scientists and hydrogeologists. We use cutting edge technology, specialist equipment and our fleet of vessels to gather accurate geospatial data in challenging environments.
Murphy Geospatial was the principal hydrographic survey contractor for the CFRAM programme in Ireland, consisting of more than 43,000 rivers, the largest hydrographic survey in Europe at the time.
Some of our recent projects include major weir and channel surveys on the River Trent, cross sectional surveys on the River Teme, plus a series of culverts, lake, and reservoir surveys across central and northern England.
We work to industry specification and standards.
Flood Survey and Modelling
Our highly successful proven methods eliminate risks, errors, delays and unnecessary costs, while stringent quality control measures always ensure superior service and safety.
We assist clients with the delivery of a diverse range of flood related projects, programmes and frameworks.
These include predevelopment advice – the facilitation of planning applications, assistance with insurance claims, detailed topographic surveys the capturing of live flood events, survey flood defense, asset assessments, development of flood relief schemes, the reclassification of flood potential flood rack marks, threshold levels, and resources to undertake emergency services.
Bathymetric surveys
This survey provides critical data for navigation safety, resource management, and environmental monitoring . They enhance marine spatial planning, support habitat mapping, and facilitate underwater construction, and also contributes to better conservation efforts and sustainable use of marine resources.
River channel surveys
Our river channel surveys provide critical data for flood management and habitat assessment. They help in designing infrastructure, monitoring ecological health, and supporting biodiversity. This informs conservation efforts and enhances water quality management, ultimately leading to improved community safety and environmental sustainability.
Reservoir surveys
Reservoir surveys improve water resource management by providing accurate data on capacity, sedimentation, and ecological health. They enhance flood risk assessment, support habitat conservation, and inform maintenance strategies. This facilitate better planning for water supply and recreational opportunities, ultimately leading to more sustainable reservoir operations and improved environmental outcomes.
Methodology
Murphy Geospatial uses the most advanced integrated equipment ensuring rapid and seamless data acquisition and delivery.
Investment in a wide range of specialist equipment such as boats, jet canoes, hovercraft, echo sounders, tide gauges, sonar scanners, magnetometers, laser scanners, remote sensing and integrated UAV / drone technology enable the delivery of highly accurate, fast and cost-effective flood surveys including inaccessible floodplains.
Health and safety is paramount. We undertake thorough risk assessment and method statement (RAMS) for each project, as every watercourse is different.
We provide deliverables in ISIS, MIKE and HE-RAS formats, as well as 2D/3D AutoCAD, plus other speciality exports and conversions to meet client requirements and software packages.
What problems can hydrographic surveys solve?
- Accurate and up-to-date information about underwater topography and bathymetry
- Developing effective flood defense strategies.
- Accurately map and monitor changes in river channels, lakes, and coastal areas.
- Identify and assess potential hazards such as underwater obstructions and scour.
- Understanding of the physical environment underwater, hindering disaster recovery and emergency response efforts.
What are the benefits of hydrographic surveys?
- Accurate mapping of the seabed, riverbed, or lakebed topography.
- Enables accurate flood modelling to predict impact of flood events on the built environment.
- Identification of potential navigation hazards, ensuring safe routes for shipping and boating.
- Planning and design of infrastructure projects, such as ports and bridges.
- Assessment and monitoring of coastal erosion, sedimentation, and changes in water depth.
- Support for scientific research, environmental impact assessments, and marine conservation efforts.
How accurate are hydrographic surveys?
Hydrographic surveys are highly accurate, providing precise measurements and mapping of the seabed, riverbed, or lakebed topography. Advanced technologies, such as multibeam sonar systems and GPS positioning, ensure minimal errors in data collection, resulting in reliable and detailed information for navigation, infrastructure planning, and scientific research.
What can hydrographic surveys be used for?
Hydrographic surveys provide crucial data for assessing and monitoring the natural environment. They help in understanding and protecting marine habitats, supporting fisheries management, studying coastal erosion and sedimentation, and detecting and monitoring pollution or oil spills. This information aids in making informed decisions for conservation and sustainable management of natural resources.