Are you seeking a professional Flood Risk Assessment in Croydon or a SuDS report for planning applications in the London Borough of Croydon? At Nimbus Engineering, we specialise in producing Flood Risk Assessments and Drainage Strategy Reports tailored to the specific planning requirements of Croydon Council.
We have successfully completed hundreds of Flood Risk Assessments (FRA) and Sustainable Drainage System (SuDS) reports—also known as Drainage Strategy Reports—to support planning applications for everything from small-scale extensions to large commercial and residential developments. Our reports are also widely used to discharge planning conditions across the borough.
Through this extensive work, we’ve gained detailed insight into Croydon’s local drainage infrastructure, sewerage networks, and underlying geology. This site-specific knowledge enables us to provide highly accurate and efficient flood risk and SuDS strategies.
Why is a Flood Risk Assessment Required?
A Flood Risk Assessment ensures your development is not at risk from flooding caused by surface water, groundwater, rivers, or other sources. If any risk is identified, our expert engineers will propose robust mitigation and resilience strategies. This guarantees the development is safe over its lifetime and poses no risk to future occupants or neighbouring properties.
What is a SuDS Report?
A SuDS (Sustainable Drainage Systems) report is essential for managing surface water runoff on your development site. The goal is to control water flow as close to its source as possible, ensuring your development does not increase flood risk locally or downstream.
The London Plan Policy 5.13 – Drainage Hierarchy
According to The London Plan, all developments should incorporate SuDS unless it is impractical. The drainage strategy should follow this hierarchy:
- Store rainwater for later use
- Use infiltration (e.g. porous paving) in suitable ground conditions
- Attenuate in ponds or open water features for gradual release
- Attenuate in tanks or sealed features
- Discharge to a watercourse
- Discharge to a surface water sewer
- Discharge to a combined sewer
Drainage systems should also contribute to wider planning objectives such as water quality, biodiversity, amenity, and recreation.
Croydon Lead Local Flood Authority (LLFA) Planning Requirements
Croydon’s Lead Local Flood Authority (LLFA) recommends that a SuDS or Drainage Strategy report is submitted at the planning application stage. This helps developers understand both the drainage requirements and associated construction costs early in the project.
Our Approach at Nimbus Engineering
At Nimbus Engineering, we collaborate with developers, architects, and planners to deliver drainage strategies that are both technically sound and economically viable. We design SuDS that are realistic for implementation—avoiding unexpected costs or delays at the planning condition or construction stages.
Contact Us Today
For a tailored Flood Risk Assessment and SuDS Report in Croydon, contact us at
📧 info@nimbusengineering.co.uk
Let Nimbus Engineering help you move forward with confidence.