Boyne Greenway, Topographical Survey

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Boyne Greenway, Topographical & Bathymetric Survey Case Study

Client: Meath County Council
Location: Oldbridge House to Navan, Co. Meath
Project Length: 25 km Corridor
Services Provided: Topographical Survey, Bathymetric Survey, UAV Survey, Laser Scanning, Total Station & GNSS

 

Project Overview

The Boyne Greenway project required a comprehensive 25 km Topographical and Bathymetric land survey from Oldbridge House to Navan. The proposed route follows the River Boyne corridor and passes through a mix of rural, urban, and heritage-sensitive environments. Survey outputs were required to support feasibility, route selection, and detailed design of the greenway.

 

The Challenge

This project presented significant technical and logistical challenges:

  • Difficult and restricted access along the River Boyne corridor
  • Heavily vegetated and steep terrain near riverbanks
  • Survey works within sensitive heritage areas, including Newgrange and Slane Castle
  • Requirement for both land and riverbed (bathymetric) data
  • Multiple survey methodologies required across varied terrain and land ownership

 

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Project solution

Our Project Solutions

Our Approach

A multi-method survey strategy was deployed to ensure full corridor coverage and high-quality data capture:

Conventional Topographical Survey (Land Survey):
Off-road areas were surveyed using GNSS and total station methods to capture terrain, features, boundaries, greenway extents, and thousands of trees across the corridor.

Laser Scanning & Static Total Station Survey:
Road crossings and infrastructure interfaces were surveyed using a combination of laser scanning and static total station techniques to capture detailed geometry and assets.

Bathymetric Survey (USV):
The River Boyne was surveyed using an Uncrewed Surface Vehicle (USV) equipped with sonar to capture riverbed levels and channel geometry.

UAV Survey:
UAV surveys were undertaken over inaccessible private lands and difficult terrain to supplement ground data and provide visual context.

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Project delivery

The Final Results

Key Deliverables

  • 2D and 3D AutoCAD topographical survey drawings (DWG)
  • Digital Terrain Model (DTM) and surface model
  • CSV point and feature datasets
  • Survey report and reference documentation

 

Accuracy & Quality Control

  • Hard Detail Accuracy: ±10 mm (X, Y, Z)
  • Soft Detail Accuracy: ±50 mm (X, Y, Z)

All survey data was captured, processed, and quality-controlled in accordance with project specifications to ensure reliable, design-ready outputs.

 

Results & Impact

“This was a technically demanding project across difficult terrain and sensitive heritage areas, delivered successfully by our experienced survey teams.”

Despite challenging terrain and access constraints, the project was delivered to programme, providing a comprehensive land and bathymetric dataset to support greenway design, environmental assessment, and planning.

 

Project Highlights

  • 25 km corridor topographical survey and bathymetric survey
  • Thousands of trees were surveyed across the corridor
  • Integrated GNSS, total station, laser scanning, UAV, and USV sonar methods
  • Survey through sensitive heritage and protected landscapes
  • Delivered high-quality datasets under challenging site conditions
  • Completed by experienced multidisciplinary survey teams
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What Our Clients Say

“We have worked with IO Geomatics on several public works projects, and they delivered a professional service and good quality surveys each time. Their measured surveys of historic streetscapes were a great base for one of our conservation projects."
5-Star Review from John McLaughlin Architects Katia Papkovskaia
Katia Papkovskaia
Director - John McLaughlin Architects
“Working with IO Geomatic has consistently provided us with accurate and reliable data. Their expertise in surveying has been invaluable to our projects. We recommend the services of Colin and his team without reservation.”
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Marcus Clifford
Associate Director - Clifton Scannell Emerson Associates Consulting Engineers
“Shay Cleary Architects have collaborated with IO Geomatics on several projects to date, from dense urban sites to complex and demanding hillside conditions. We have always been impressed with the level of service provided and detailed survey information delivered within tight project timelines. The team are always very direct and accommodating to deal with, and we look forward to working on more projects together in the future.”
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