Water Sector

Urban drainage philosophy is evolving. Climate change predictions and recent serious flooding events are driving policy makers to legislate for more sustainable solutions. Traditional hard engineering now forms just part of a toolkit of measures available to the 21st Century drainage engineer.
Phoenix Adam will work with you to develop the right solution, ranging from strategic planning scale to individual site level.

Urban Drainage Modelling

Hydrological and hydraulic modelling of urban drainage networks is our core business. Our senior staff pioneered modelling work in the 1980s using HR Wallingfords WASSP software. They have continuous modelling experience from those early days to the present and have remained hands on technical specialists, fully conversant with InfoWorks CS and ICM.

Sewerage Management Planning

One of the main drivers behind the development of hydraulic modelling software within the water industry was the need for credible strategic planning based on current and predicted asset performance.

From the 1980s onwards our engineers have been active in the evolution of hydraulic modelling as a strategic planning tool. Historically, we have been required to produce Drainage Area Studies (DAS) or Asset Management Plans, focused on the complete piped drainage network of a discrete town or city area.  Our team has completed over 60 individual DAS projects in England, Scotland, Northern Ireland and New Zealand.

In the UK European Union directives encourage a natural drainage basin approach to strategic planning.  Phoenix Adam are currently involved with Integrated Catchment Modelling (ICM) studies for key client United Utilities.  ICM projects consider all water systems, both engineered and natural, and their interaction. 

In New Zealand, formerly combined networks are being separated under the Wastewater Network Inflow and Infiltration (I&I) Program.  Phoenix Adam worked with key client North Shore City Council to improve the I&I reduction effectiveness reporting standard.

Integrated Catchment Modelling

Current developments in legislation, challenges due to climate change and increased flooding frequency require a new approach to surface water management. The Flood and Water Management Act 2010 recommends a holistic, joined up approach to surface water management. To put this into practice and to ensure a consistent approach DEFRA advocate:

  • Surface Water Management Plans (SWMP) - a single plan identifying the level of risk from all sources of flooding and water quality problems in a catchment.
  • Integrated Catchment Modelling (ICM) -planning and managing an urban drainage system which, contributes to water quality and flooding problems as a result of interaction of different physical components, such as sewers, surface water runoff and rivers. 

For the above studies to operate effectively there is a need for different organisations to work together, i.e. Local and Highway Authorities, the Environment Agency and Water Companies. This collaboration will form an important part of any integrated approach. 

As well as different organisations there is a need for different software packages to work together. Recent software developments utilising 2D modelling and Open MI allows for a more detailed analysis to be undertaken using different software. This approach has led to a more robust representation of catchment performance, a better understanding of a problem and the development of more holistic solutions. 
Phoenix Adam have particular expertise in the use of the following world leading software packages; 


  • InfoWorks ICM (integrated sewer, river and overland flow)
  • Infowork CS + 2D (integrated sewer and overland flow)
  • HEC- RAS & Infoworks RS (river flows).
  • FEH / WinFap software. (river level and flow data) 


This suite of software packages enables Phoenix Adam to undertake both large scale ICM work, IUD studies and develop SWMPs.