Birkenhead College Drainage and Flood Resilience Upgrade
Siteworks was engaged to investigate and remediate ongoing drainage and flooding issues across Birkenhead College.
After significant rainfall events, the existing drainage infrastructure was no longer able to manage the volume of water across the site. This resulted in widespread surface flooding, water ponding, and saturated ground conditions in key areas of the school.
Working alongside the Ministry of Education Property Office and Robert Palmer at Educational Building Services, Siteworks developed and delivered a staged solution focused on improving flood resilience, drainage performance, and long-term sustainability, while keeping disruption to school operations to a minimum.
Solving Long-Term Drainage Challenges at Birkenhead College
Birkenhead College had been experiencing ongoing drainage and flooding issues across the school grounds.
Following heavy rainfall, the existing systems were unable to move water away from key areas efficiently. This caused visible surface flooding, water ponding, saturated ground, and increased risk of long-term damage to the surrounding infrastructure.
The project also addressed less visible issues, including subsurface water movement, inconsistent ground conditions, and potential erosion that could affect the stability and performance of the site over time.
Rather than applying a short-term fix, Siteworks focused on identifying the underlying causes and delivering a practical, staged solution that would improve long-term drainage performance.
The Goal
The main goal was to significantly reduce surface flooding across the school and improve the way water moved through and away from the site.
The project needed to:
- Reduce surface flooding across key areas of the school
- Identify and resolve underlying drainage failures
- Improve long-term resilience against heavy rainfall events
- Protect school infrastructure from ongoing water-related damage
- Keep disruption to students, staff, and daily operations to a minimum
The approach was based on proactive investigation and targeted remediation, addressing the root causes of the issue rather than relying on temporary repairs.
The CHALLENGE
This was a complex school drainage project that needed to be carefully planned around an active education environment.
Key challenges included:
- Tight timeframes due to school term schedules and limited working windows
- Existing underground services that required careful planning and execution
- Saturated and inconsistent ground conditions
- Restricted access across parts of the school site
- Staging the works to avoid disruption to daily school operations
- Balancing fast delivery with precision around sensitive infrastructure
The key difficulty was delivering the work quickly without compromising accuracy, safety, or the long-term performance of the new drainage systems.
The Siteworks Solution
Siteworks implemented a three-stage delivery approach, allowing the project to move efficiently while maintaining normal school activity wherever possible.
The solution included upgraded drainage systems, corrected surface levels, and sustainable permeable surfacing to improve how water was managed across the site.
Key elements included:
- Installation of upgraded drainage systems and new pipework to improve water flow and capacity
- Regrading and correction of surface levels to support effective runoff
- Integration of permeable surfacing using Porous Lane, supplied by Watersmart
- Use of recycled material surfacing to support a more sustainable water management outcome
- Strategic water direction away from critical school areas
- Staged delivery to reduce disruption to students and staff
This combined approach addressed both surface water issues and deeper subsurface drainage performance, giving the school a more resilient long-term solution.
The result
The completed project delivered a clear improvement in flood resilience and overall site performance at Birkenhead College.
The upgraded systems now allow water to move more effectively through the site, reducing surface flooding and helping protect the school grounds during heavy rainfall.
The project achieved:
- Significant reduction in surface flooding across the site
- Improved drainage performance during heavy rainfall events
- Better long-term resilience for the school grounds
- Reduced risk of water-related damage to infrastructure
- Sustainable permeable surfacing through the use of Porous Lane
- Delivery with minimal disruption to students, staff, and school operations
This project is a strong example of how practical civil works, detailed investigation, and staged delivery can solve complex drainage issues in active school environments.
Project Highlights
- Staged drainage upgrade across an active school site
- Reduced flooding and water ponding after heavy rainfall
- Improved surface and subsurface water management
- Installed upgraded pipework and corrected surface levels
- Integrated sustainable permeable surfacing using Porous Lane
- Delivered with minimal disruption to school operations
- Improved long-term resilience of the school grounds
Services Used
The project involved a range of civil construction and drainage services, including:
- Drainage investigation
- Flood remediation
- Drainage pipework installation
- Surface regrading
- Permeable surfacing
- Stormwater management
- School civil works
- Site remediation
Why This Project Matters
Flooding and poor drainage can have a major impact on schools, affecting access, safety, usability, and long-term infrastructure performance.
For Birkenhead College, the issue required more than a simple repair. The site needed a targeted solution that addressed both visible surface flooding and the underlying water movement contributing to saturated ground conditions.
By combining investigation, upgraded drainage infrastructure, regrading, and sustainable permeable surfacing, Siteworks helped create a more resilient and usable school environment.
Our Values
We Value Each Other
Each person brings their own strengths, and can be relied upon to support the team.
We Take Pride in our Work
From planning through to completion, we get stuck in every step of the way.
We Keep Communication Open
Through honesty and transparency, we can achieve successful, predictable project outcomes for our clients.
We Work Together for Safety
Every team member does their part to keep themselves and others safe on site.
Frequently asked questions
What drainage issues did Siteworks address at Birkenhead College?
Siteworks addressed ongoing surface flooding, water ponding, saturated ground conditions, and underlying drainage failures across key areas of Birkenhead College.
How was the drainage upgrade delivered with minimal disruption?
The project was delivered through a staged approach, allowing Siteworks to complete the works efficiently while reducing disruption to students, staff, and normal school operations.
What is Porous Lane?
Porous Lane is a permeable surfacing system supplied by Watersmart. It allows water to infiltrate through the surface rather than pooling, helping support more sustainable stormwater management.
Why was permeable surfacing used on this project?
Permeable surfacing was used to help reduce surface water build-up, support infiltration, and improve the long-term performance of the school’s stormwater management system.
Can Siteworks complete drainage upgrades for other schools?
Yes. Siteworks can deliver drainage upgrades, stormwater management, flood remediation, regrading, and wider civil works for schools and education sites.