Hydrographic & Integrated Bathymetric Survey

Riverbed & Seafloor insights, and reliable data for marine projects

Bathymetry is the measurement of underwater depth in oceans, lakes, or rivers. It creates a map of the underwater landscape, similar to how topography maps land surfaces.
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Hydrographic surveying, a broader field, includes bathymetry but also maps other features of water bodies, such as currents, tides, and the composition of the seafloor.
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These processes are essential for:

• Safe navigation (e.g., avoiding hazards),
• Marine construction (e.g., building ports or offshore structures),
• Environmental monitoring, and
• Understanding aquatic ecosystems.

​Explore the Mysteries of the Underwater World with Goodland Surveys

Unveil the hidden depths with our cutting-edge Bathymetry Survey, powered by state-of-the-art Echo Sounder technology. Our advanced equipment sends precise acoustic pulses to the seafloor, delivering accurate, high-resolution maps of underwater topography—whether it’s lakes, rivers, or vast ocean environments. From navigation and dredging to environmental monitoring and underwater exploration, our survey provides critical insights like depth information, seafloor mapping, and detection of underwater features.
Why Choose Us?

• Cutting-Edge Technology: Our Echo Sounder systems redefine precision, ensuring you get the most detailed and reliable underwater data.
• Versatility: Perfect for any aquatic environment—lakes, rivers, or oceans—our services adapt to your project’s unique needs.
• Precision & Efficiency: Our experienced team is committed to delivering actionable data quickly and accurately, saving you time and resources.
• Wide-Ranging Applications: Support for navigation, dredging, environmental studies, and underwater exploration means we’ve got you covered, no matter the mission.

With Goodland Surveys, you’re not just getting the seafloor—you’re unlocking the potential of every aquatic space.   Navigate with confidence. Discover with clarity. 

​Trust our Echo Sounder-based Bathymetry Survey to reveal the secrets beneath the surface and elevate your marine projects to new depths.

​Discover the Future of Bathymetry Surveying with the Teledyne Odom Echotrac E20

Unlock unparalleled precision and efficiency in hydrographic surveying with the   Teledyne Odom Echotrac E20—the ultimate solution for accurate underwater mapping and data collection. Whether navigating shallow coastal waters or exploring the depths of the open sea, this state-of-the-art single-beam echo sounder is engineered to deliver exceptional performance in any environment. Compact, portable, and built for rugged durability, the Echotrac E20 is your go-to tool for fast, reliable, and cost-effective surveys.

Teledyne Echotrac E20

• Precision We Trust: Backed by over 40 years of sonar expertise, the Echotrac E20 ensures survey-grade accuracy every time. Its advanced technology minimizes data processing time, allowing you to complete projects faster without compromising quality.
• Versatility for Any Project: Featuring dual-channel operation from 10 to 250 kHz and a depth range of 0.5 to 6,000 meters, this echosounder adapts effortlessly to diverse environments—from shallow rivers to deep ocean basins. One system, endless possibilities.
• Effortless Setup & Operation: Designed for rapid mobilization, the Echotrac E20’s intuitive interface and minimal interfacing requirements mean you can start surveying immediately. Its compatibility with a wide range of transducers further enhances flexibility, letting you tailor the system to your specific needs.
• Built for the Field: Compact, robust, and water-resistant (IP67), the Echotrac E20 is engineered to withstand the toughest conditions, ensuring reliability whether you’re on a small vessel or in remote locations.

Seamless Data Processing with Industry-Leading Software, The Echotrac E20 doesn’t just collect data—it integrates seamlessly with the best hydrographic processing tools in the industry. Compatible with top-tier software, our survey data can be transformed into actionable insights with ease. Here’s what you can achieve:

• Efficient Data Management: Clean and validate data quickly to streamline project workflow.
• High-Resolution Mapping: Generate detailed bathymetric charts and 3D models for precise underwater visualization.
• Advanced Analysis: Perform in-depth assessments for navigation, dredging, or environmental studies.
• Professional Deliverables: Create reports that meet the highest industry standards, impressing clients and stakeholders alike.

With the Echotrac E20, we’re not just gathering data—we’re generating results that drive smarter decisions, faster.
Applications Tailored to Your Needs. The Echotrac E20 excels across a wide range of hydrographic surveying and mapping applications, making it an essential tool for professionals in multiple industries:

• Navigation & Dredging: Ensure safe passage and optimize dredging operations with precise depth measurements.
• Coastal & Offshore Projects: Map underwater topography for infrastructure planning, cable laying, or wind farm development.
• Environmental Monitoring: Track sediment movement, monitor habitats, or assess erosion with detailed seafloor data.
• Underwater Exploration: Uncover hidden features and structures with confidence, even in challenging environments.

Take the Next Step in Hydrographic Surveying
Don’t settle for outdated technology or inefficient workflows.

​Hydrographic & Integrated Bathymetric Survey Methodology

1. Survey Control & System Integration

Bathymetric data acquisition shall be performed using a survey-grade single beam echo sounding system integrated with Differential GNSS (DGPS) positioning. The echo sounder shall be rigidly mounted on a calibrated survey vessel with proper alignment to the vessel reference frame.
Horizontal positioning shall be obtained through DGPS with sub-meter accuracy, and all observations shall be recorded in real-time in a unified coordinate system (WGS84 / UTM or Project Datum as specified). Antenna offsets, transducer draft, and lever-arm measurements shall be precisely measured and applied.
A patch test (where applicable) and system checks shall be conducted prior to commencement of operations to verify alignment, latency, and draft corrections.

​2. Survey Planning & Line Layout

Survey lines shall be generated using mission planning software to ensure systematic coverage of the waterbody. Line spacing shall be designed based on project scale, required contour interval, and morphology of the bed.
Cross-check lines shall be planned perpendicular to primary lines to validate data consistency and accuracy. Navigation shall be controlled in real time through onboard survey software to maintain line adherence and minimize deviation.

​3. Field Data Acquisition

The survey vessel shall traverse along predefined lines at controlled speed to ensure optimal sounding density. The echo sounder shall record continuous depth measurements while DGPS simultaneously logs georeferenced positional data.
The following corrections shall be applied:

• Transducer draft correction
  
• Sound velocity correction (based on bar check / SV measurement where required)
  
• Tidal or water level correction (if applicable)
  

Data acquisition parameters such as ping rate, frequency selection, gain control, and bottom tracking shall be optimized based on water depth and bed conditions.
All raw data shall be logged digitally with time stamps for post-processing.

​4. UAV-Based Topographic Survey (Islands, Banks & Structures)

For exposed areas including islands, embankments, shallow zones, and hydraulic structures inaccessible by boat, aerial survey shall be conducted using UAV-based photogrammetry.
Ground Control Points (GCPs) shall be established and observed using DGPS for accurate geo-referencing. UAV imagery shall be processed to generate:

• Dense point cloud
• Digital Surface Model (DSM)
• Orthomosaic   images
• Contour mapping

5. Data Processing & Quality Control

Post-processing shall be carried out using hydrographic processing software. The workflow shall include:

• Data cleaning and spike removal
  
• Filtering of erroneous soundings
  
• Cross-line analysis for accuracy validation
  
• Application of all vertical and positional corrections
  
• Datum transformation (if required)
  

Processed bathymetric data and UAV-derived topographic data shall be merged to create a seamless terrain model representing both underwater and above-water features.
Quality checks shall be performed to ensure compliance with project accuracy standards.

6. Deliverables

The final integrated dataset shall be used to generate:

• Bathymetric contour maps (as per specified interval)
  
• Longitudinal and cross-sections
  
• Digital Terrain Model (DTM)
  
• CAD-compatible drawings (DWG/DXF format)
  
• Processed XYZ data files
  
• Survey report including methodology, accuracy statement, and control details
  

All deliverables shall be submitted in both soft copy and hard copy formats as required.