The main interest in Integrated Urban Drainage modelling will be identifying and managing flood risk, which will include the response to heavy rainfall, interaction with tidal water and the consequences of blockages and failures. This is the second edition of the Chartered Institution of Water and Environmental Management (CIWEM) Urban Drainage Group (UDG) Integrated Urban Drainage Modelling Guide, superseding the first version published in 2009.
The Integrated Urban Drainage Modelling Guide (the Guide) is intended to illustrate good practice in relation to the holistic or integrated hydraulic modelling of the various different components of urban drainage systems. The Guide can be referred to in contract documents but it is not intended to be used directly as a specification for modelling. It will however, provide suggestions for writing a suitable specification, if required.
The Guide is intended to accompany the Code of Practice for Hydraulic Modelling of Urban Drainage Systems published by the UDG of the CIWEM.
The primary benefit of this Guide will be to improve the consistency and quality of integrated modelling work for both client and supplier partners. It provides guidance on the approaches that are proportionate to the scale and complexity of the flooding issues considered.
The Guide will also help with the technical development of individuals working in this specialist area. It is aimed at all Integrated Urban Drainage practitioners, across a range of expertise and experience. It is, however, not a substitute for this expertise and the appropriate level of training.
Although there is a section on software, the Guide is not software specific, but aims to encompass the more frequently used types of software. Some examples may use a particular software product.