Creating Fence Diagrams in WinFence: A Complete Guide to Subsurface Visualization

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Creating Fence Diagrams in WinFence: A Complete Guide to Subsurface Visualization

Creating fence diagrams in WinFence using borehole data to visualize subsurface layers

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Introduction

Understanding subsurface conditions is one of the most critical aspects of geotechnical engineering, environmental site assessment, and hydrogeological analysis. While borehole logs provide detailed vertical information, they are inherently limited in their ability to communicate spatial relationships across a site.

This is where fence diagrams become essential.

Fence diagrams connect multiple boreholes along defined alignments, allowing geoscientists and engineers to visualize how geological layers vary laterally. They transform isolated data points into a coherent subsurface model—revealing patterns, trends, and anomalies that are otherwise difficult to detect.

WinFence is a powerful tool designed specifically for this purpose. It enables users to generate detailed fence diagrams quickly and accurately, using borehole data from WinLoG.

In this guide, we walk through the complete process of creating fence diagrams in WinFence—from data preparation to final visualization—along with best practices to ensure clarity and accuracy.

🧭 What Is a Fence Diagram?

A fence diagram is a 3D representation of subsurface conditions created by connecting multiple cross-sections generated using borehole logs along a defined line or path.

Key Features of Fence Diagrams

  • Displays lithology across multiple boreholes
  • Shows lateral continuity of soil and rock layers
  • Highlights stratigraphic relationships
  • Integrates GIS, geotechnical and geophysical data

Why Fence Diagrams Matter

Fence diagrams are used to:

  • Interpret subsurface geology
  • Support engineering design
  • Identify contamination pathways
  • Communicate findings to stakeholders

🧱 Preparing Data for WinFence

Before creating a fence diagram, your data for the cross-sections must be properly prepared.

Data Requirements

To generate accurate fence diagrams, you need:

🔹 Borehole Coordinates

  • X, Y locations
  • Elevation

🔹 Lithology Data

  • Depth intervals
  • Material descriptions

🔹 Additional Data (Optional)

  • SPT values
  • Geophysical logs
  • Groundwater levels

Data Quality Considerations

Ensure:

  • Consistent units (meters or feet)
  • Accurate elevations
  • Standardized lithology descriptions

Why Preparation Is Critical

Poor data quality leads to:

  • Misaligned layers
  • Incorrect interpretations
  • Misleading diagrams

🏗️ Importing Borehole Data into WinFence

Once your data is ready, the next step is creating the cross-sections in WinFence.

Validation Checklist

  • Borehole positions correct
  • Depth intervals accurate
  • Lithology properly structured

📐 Creating a Fence Diagram

This is the core step where data becomes visualization. After the cross-sections have been created, create a new 3D View in the project. The cross-sections will automatically be added to the 3D view along with the boreholes.

Adjust Scaling

Set:

  • Vertical exaggeration
  • Horizontal scale

Why Scaling Matters

  • Too much exaggeration distorts reality
  • Too little hides important features
https://www.groundwatersoftware.com/media/fence.jpg

📊 Interpreting Fence Diagrams

Fence diagrams are more than visuals—they are analytical tools.

What to Look For

🔹 Layer Continuity

Are layers continuous across the site?

🔹 Variability

Do materials change laterally?

🔹 Anomalies

Unexpected features or discontinuities

Flow direction and levels

Applications

  • Identifying weak soil zones
  • Mapping contamination pathways
  • Designing foundations

⚙️ Advanced Features in WinFence

Multi-Fence Diagrams

Create multiple fence lines for:

  • Complex sites
  • Large datasets

3D Visualization

Some workflows allow:

  • 3D subsurface modeling
  • Enhanced spatial understanding

Integration with Other Tools

WinFence integrates with:

  • Borehole logging software
  • Databases
  • GIS systems

⚠️ Common Mistakes to Avoid

❌ Poor Data Quality

Leads to inaccurate diagrams

❌ Over-Interpolation

Creates unrealistic layers

❌ Inconsistent Lithology

Breaks continuity

❌ Overcomplicated Visuals

Reduces readability

🚀 Best Practices for Fence Diagram Creation

✔ Use High-Quality Data

Start with accurate borehole logs

✔ Standardize Lithology

Ensure consistency across datasets

✔ Choose Alignments Carefully

Align with project objectives

✔ Validate Results

Compare with field observations

✔ Keep Visuals Clear

Prioritize readability over complexity

🔗 Integrating Fence Diagrams into Workflows

Fence diagrams are a key component of larger workflows.

Typical Workflow

  1. Borehole logging
  2. Data structuring
  3. Visualization (WinFence)
  4. Analysis
  5. Reporting

Benefits

  • Better interpretation
  • Improved communication
  • Stronger decision-making

🌍 Industry Applications

Geotechnical Engineering

  • Foundation design
  • Soil stratigraphy analysis

Environmental Consulting

  • Contamination mapping
  • Site assessments

Hydrogeology

  • Aquifer characterization
  • Groundwater flow analysis

Mining & Exploration

  • Resource modeling
  • Stratigraphic interpretation

🔄 Fence Diagrams and Digital Workflows

As geoscience workflows evolve, fence diagrams are becoming part of:

  • Integrated data systems
  • Automated reporting
  • AI-driven analysis
  • Real-time visualization
  • Cloud-based data integration
  • Advanced modeling tools

🏁 Conclusion

Fence diagrams are one of the most powerful tools for visualizing and interpreting subsurface conditions. By connecting borehole data into a continuous profile, they provide insights that are not possible from individual logs alone.

Using WinFence, geoscientists and engineers can quickly create accurate, customizable fence diagrams that support analysis, design, and reporting.

When combined with high-quality data and standardized workflows, fence diagrams become an essential component of modern geotechnical and environmental projects.

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