Updating the Chartered Institute of Water and Environmental Management (CIWEM) integrated modelling guide
The project provides practitioners, who need to undertake integrated risk assessments, with updated guidance and current best practice.
Documents
The outputs of this project are published by the Chartered Institute of Water and Environmental Management (CIWEM) on their Urban Drainage Group webpage. To access the guide on their webpage you will need to expand the heading ‘Guidance Notes’.
Project summary
The Chartered Institute of Water and Environmental Management (CIWEM), working with The Flood and Coastal Erosion Risk Management Research Programme have published a new and revised Integrated Urban Drainage Modelling guide (IUDMG).
Identifying and managing flood risk, particularly in urban areas, often requires consideration of flood risk from multiple sources of flood water at the same time (such as drainage systems, rivers, and the sea for example).
The guide includes new science which has emerged since its initial publication in 2009. The layout, style, and overall content are also updated. It now:
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emphasises approaches that are proportionate to the scale and complexity of each flooding problem
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encourages uncertainty and confidence to be considered at all stages of assessment
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illustrates good practice in the integrated hydraulic modelling of the various components of urban drainage systems.
The revised guide makes it easier for flood risk management professionals to understand flood risk, and how to use that understanding.
Background
The revised guide is aimed at all integrated urban drainage practitioners, from any sector, and across a range of expertise and experience. It is designed to improve the consistency and quality of integrated modelling work for clients and suppliers, but it is not a replacement for experience and knowledge.
Method
The project was managed and guided by a steering group consisting of flood risk management experts from CIWEM, the Environment Agency, Stantec, United Utilities and Torbay council LLFA (lead local flooding authority).
Richard Allit (of Richard Allit Associates) and Katy Pearson (of Aecom) were the main authors and editors of the guide, with content written by staff from their respective organisations. Further contributions came from organisations across the wider flood risk management industry, including BlueSky, Maltby Surveys, Onsite, Jacobs, Innovyze, JBA, Mike and BMT.
Richard, Katy, and their teams developed the content and style of the new guide through a series of user workshops, attended by a cross section of people working in the flood risk management industry. Representations were made from regulators, policy leads, consultants, engineers, utilities, lead local flood authorities, and other Risk Management Authorities (RMAs). Early drafts of the guide were reviewed by the steering group to balance the volume of content with usability.
Project Information
Project manager: Mark Whitling, Flood and Coastal Risk Management, Environment Agency.
This project was commissioned by the Environment Agency’s FCRM Directorate, as part of the joint Flood and Coastal Erosion Risk Management Research and Development Programme.
Last updated 20 May 2022 + show all updates
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Link to project outputs added under documents heading. Project summary added to webpage body. The project is marked as complete.
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First published.