xpdrainage provides a set of design tools to help with the planning stage.
Deluge - Analyse the surface to establish the likely flow paths and pooling locations for water. This information can prove vital in the correct placing of Stormwater Controls.
Quick Storage Estimate Calculator - Provides an estimate of the range of storage required for the Site.
Water Quality Calculator- Provides an estimate of the treatable water quality volume.
First Flush Calculator - Determine the likely Pollution Shock values for the site.
UK and Ireland Rural Runoff Calculator - Determine the Peak rural discharge rates, as well as the volume balance value, based on UK standards.
Méthode des Pluies Calculator - Provides an estimate of the storage volume required for the site (method used in France).
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