CCTV Drain Surveys for Flood Risk Assessment

Purpose

• Evaluate the current condition of drainage infrastructure
• Identify potential weak points or blockages that could contribute to flooding
• Assess the capacity of existing drainage systems to handle heavy rainfall

Key Benefits

• Non-invasive inspection: Allows for thorough examination without excavation
• Accurate data collection: Provides detailed visual information about pipe conditions
• Identification of hidden issues: Reveals problems not visible from the surface
• Evidence-based assessment: Offers concrete evidence for flood risk evaluations

What the Survey Reveals

• Pipe damage: Cracks, fractures, or collapses that could lead to leaks or reduced capacity
• Blockages: Debris, root intrusion, or buildup that restricts water flow
• Misaligned joints: Areas where pipes have shifted, potentially causing leaks or restrictions
• Pipe capacity: The size and condition of pipes, indicating their ability to handle water volume
• Connections and layout: The overall drainage network structure and how it might respond to heavy rainfall

Process

• Initial assessment: Determine which parts of the drainage system need to be surveyed
• CCTV inspection: Insert cameras into the drainage system to capture footage
• Data analysis: Review footage to identify issues and assess overall condition
• Reporting: Compile findings into a comprehensive report, often including video evidence and recommendations

Integration with Flood Risk Assessment

• Identifying potential failure points in the drainage system
• Assessing the system's capacity to handle predicted rainfall events
• Informing recommendations for drainage improvements or flood mitigation measures
• Supporting hydraulic modelling of the drainage system's performance under various scenarios

When It's Particularly Useful

• Areas with a history of flooding
• Older properties or developments with aging infrastructure
• Locations where significant changes to drainage systems are proposed
• Sites where the current drainage layout is unclear or poorly documented