The WaPUG User Notes have been a feature of WaPUG since the late 1980s. The notes are written by users and provide practical advice on specific modelling issues. These notes should be seen as complementing the software user manuals and Help systems.

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• User Note 32 - Evaluating potential for real time control: Checklist of factors and general guidance
• User Note 34 - Dynamic modelling of wastewater treatment processes
  General description of dynamic modelling of WwTW
• User Note 6 - Use of rainfall data from flow surveys
  Advice on the selection of rainfall events for verification purposes
• User Note 22 - Selection of tide levels
  Advice on the choice of tide levels to use where overflows are tidally influenced. Also discusses joint probability of tide levels and rainfall.
• User Note 39 - Use of rainfall data from radar
  Describes issues on the use of data from weather radar in sewer models
• User Note 9 - The percentage run-off equation
  Description of the PR equation. Also referred to as the Wallingford runoff model.
• User Note 21 - Runoff equations and catchment data
  This User Note gives guidance on the collection of sub-catchment area data for use with the Wallingford Runoff Model.
• User Note 28 - A new runoff volume model
  Description of the ‘New UK Runoff model’
• User Note 33 - Modelling dry weather flow
  Advice on estimating the components of dry weather flow and its diurnal variation
• User Note 35 - Active trade effluent control
  Describes a methodology to actively control the release of trade effluents into sewer systems so as to smooth out the flows/loads arriving at WwTWs.
• User Note 1 - Modelling vortex flow control devices
  Describes vortex flow control devices and how to model them – in general and in different software packages.
• User Note 2 - Modelling ancillaries and discharge coefficients
  Describes the principles behind modelling different types of throttles and gives advice on selecting coefficients.
• User Note 15 - Storage compensation
  Provides a method to calculate an allow for unmodelled storage
• User Note 27 - Modelling ancillaries: weir coefficients
  Advice on discharge coefficients for different types of overflow – both weir and orifice. Also allowances for scrum boards and screens.
• User Note 38 - Modelling Large Detention Tanks
  Discusses the alternative ways in which detention tanks can be modelled. Also issues about storm durations, emptying and sedimentation.
• User Note 29 - Predicting flooding using hydraulic models
  When a verified hydraulic model predicts flooding careful assessment is required to determine its effect.
• User Note 36 - Case study: River quality modelling for urban pollution management
  Finham Sewage Treatment Works (STW), which servers the Coventry urban drainage catchment, is to undergo a major capital scheme to meet a number of requirements.
• User Note 37 - Overland Flood Routing
  As the UK Water Industry has gained more experience in the use of hydraulic models of sewerage systems there has also come a tendency to expect more and better performance from these models with a general expectation by non-practitioners that the models will always give the correct results no matter what is asked of them.
• User Note 5 - Management of above ground data for partially separate systems – Issues for converting old models
  Describes the problems with earlier models of assigning runoff parameters when the model covers both combined and separate systems. Advice on adjustments to runoff parameters when converting models.
• User Note 13 - The dangers of force fitting
  Advice on good practice when verifying models
• User Note 40 - Overland Flow
  This User Note provides guidance on hydraulic modelling in urban areas using the latest versions of software which have the capability to model overland flows in 2 dimensions (2D).