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Flood Flow

Infrastructure Design Made Simple

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Flood Flow Ltd Services

FLOOD FLOW was established in 2005 with the simple philosophy of providing clients with a high standard of service; a professional approach to “problem solving” and an appreciation of commercial and economic elements coupled with a duty of care for safe and secure design.

At the onset, the practice mantra has been the acquisition of work as a result of quality and recommendation rather that aggressive marketing and salesmanship.  A larger proportion of our workload is repeat business from clients with whom we have developed a long and trustworthy relationship.

FLOOD FLOW endeavor to provide the same attention to detail whether the commission is a single beam for a house extension or a multi million pound development. FLOOD FLOW offers a full portfolio of services, and as consulting civil infrastructure engineers. The practice is also increasingly involved with ‘sustainable design’ and in particular ‘sustainable urban drainage which is an environmentally friendly way of dealing with surface water runoff.

Our staff make a valuable contribution to the services we offer our clients and are encouraged to develop their skill and increase their responsibilities.

The practice retains a close eye on the latest developments in I.T. which is relevant to our business.  We also engage a rolling programme of updating our I.T. equipment and the purchase of design programmes.


‘An Innovative Approach to Finding Better Solutions’

Through experience on many multi-disciplinary projects, FLOOD FLOW are able to provide more than just civil engineering services, realising that co-ordination is key to successful project completion; our focus is working with clients to find the best solutions.  The diverse skills base of the practice, with the reputation for quality workmanship, maintains a creative and imaginative approach to every task it undertakes. 


- Civil Engineering                                         

- Highway Design                                          

- Drainage and Sewage Treatment            


Drainage Design & Flood Risk Assessments

As a planner, architect, property investor, or property developer you’ll need to understand the potential risk of flooding when designing and developing a new site. You’ll also need to consider how your site may affect potential flooding elsewhere in the community – especially if it sits within a known flood zone.

Most importantly though, you’ll need to understand how you can use mitigation measures to manage these risks for all stakeholders involved. It is likely you will need to know and understand all of these aspects before you put in a planning application.

Whether for a residential or commercial site, a Flood Risk Assessment (FRA) identifies these risks and mitigation measures for you. The level of information to document in a Flood Risk Assessment should be specific to the nature of the proposed development.

Sources of flood risk

At the offset an indication of the potential flood risk to the site will be required. The purpose of this early work is to identify all sources of flood risk and determine whether any further work is required to understand any risks.

Site specific flood risk

A site specific appraisal provides an understanding of the particular risks of flooding the site.

Potential impacts to the development including what effects it may have elsewhere on flood risk are set out in a FRA report in accordance with NPPF guidance.

Meeting EA requirements

A detailed flood risk study can be provided if the Environment Agency require further quantitative analysis. This might be needed to assess detailed flood risk issues relating to the development site or its effects further downstream.

For example; Flood Modelling may be required to establish specific flood levels at a site where the Environment Agency do not hold this data.

Sustainable Drainage Systems (SuDS)

New developments have the potential to cause an increase in impermeable areas, an increase in surface water runoff rates and volumes, and a consequent increase in downstream flood risk due to overloading of sewers, watercourses, culverts and other drainage infrastructure. Managing surface water discharges from new developments is therefore crucial.


Infrastructure & Highways Design

Delivery of housing, employment and educational growth across the country requires the design, agreement to and construction of infrastructure. This infrastructure ranges from delivery of drainage, foul and surface, earthworks, utility diversions and supply, and new highway and altered junctions, supported by attractive public realm and essential on and off site measures to encourage use e.g. bus stops and foot/cycle ways.

Section 38 (S38) Agreements

FLOOD FLOW can guide you through the process by negotiating Section 38 Agreements with the Local Highway Authority and preparing appropriate plans to support the procedure.

If you think you might need an S38 agreement or just want to discuss your options

Section 278 (S278) Agreements

FLOOD FLOW have extensive experience in preparing detailed design drawings for highway works and submitting them to the Local Highway Authority for technical approval. Following approval, FLOOD FLOW can also assist with preparation of contract documents, contractor procurement and site supervision.

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Contact Us

Contact us and find how our services can benefit your company.

36 Holdenbrook Close, Leigh WN72HL, UK


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