Welcome to Richard Allitt Associates...

"Our aim is to resolve flooding problems in the urban environment using the latest analytical techniques"

sussex flooding

Richard Allitt Associates is a leading specialist provider of hydraulic modelling, surface water management and flood risk consultancy for the urban drainage industry.

We pride ourselves on the high level of detail we can provide and the quality of our work using state of the art hydraulic modelling techniques.

Our program of choice is InfoWorks ICM which offers exceptional results through its general versatility and functionality. It provides us with the ability to test future developments through the use of 'what if flooding scenarios’.

As hydraulic modelling specialists we are experienced in a range of sectors including water companies, the property sectorlocal authorities and the legal profession.

We have offices in the Midlands and Sussex and operate nationally. However, as a small consultancy we like to think we can be highly responsive and cost effective while at the same time offering a high quality specialised service.

With 20 years experience we are sought after for our Expert Witness services and offer consultancy on a wide range of complex flood modelling, drainage and wastewater issues. 

Please call us on 01444 401840 to see how we can help

susdrain logo richard allitt associates

We are an advocate of and expert in sustainable drainage schemes (SuDS) and have partnered with Susdrain to support their implementation. 

Our services include researchtechnical development, flooding investigations, flood risk assessmentdesign and feasibilityconsultancy and project management. We carry out specialist flood risk assessments, urban flood forecasting and provide innovative drainage area plans, sewerage management and surface water plans.

You will find many of our case studies showcasing our work throughout this site; our latest examples can be found here:

Edinburgh Catchment Study 

Filey Flood Alleviation Scheme

South Tyneside SWMP

Latest News!

Update from CIWEM UDG Conference: Modelling 3D Structures

10 Golden Rules for Flow Surveys

Richard Allitt Associates achieves Carbon Neutral Target

Are current research efforts enough to ensure a flood resilient future? Sustainable & Resilient Water Infrastructure Workshop

Speakers announced for Autumn CIWEM Urban Drainage Conference

Flooding & the Law - Interview with Richard Allitt in The Expert Witness Magazine

The 5 Most Common Mistakes when Modelling -Not all models are the same

Lead Local Flood Authority keen to hear latest from RAA on Flood Forecasting 

Richard Allitt Associates celebrates 20th Anniversary

Richard Allitt Associates a Finalist in Gatwick Diamond Business Awards

Partnership Working delivers results for Severn Trent

Real Time Urban Flood Forecasting Now a Reality

Remote Aerial Surveys 

We now also offer UAV ('drone')aerial surveys for a range of uses including environmental monitoring and industrial inspections. Take a look at our work on You Tube or visit us at www.remoteaerialsurveys.co.uk for more information.



UKAS Accredited Logo

Certificate No. 9794

ISO 9001

ISO 14001