In class: Underground Infiltration Practices: Understanding Exfiltration

Tuesday, November 12, 2019

8:30 a.m. - 4:30 p.m.

Grand River CA Head Office - Auditorium , Cambridge (View Map)

$100 CAD

Water quality improvements for most infiltration practices come largely from the runoff reduction. So understanding and optimizing the exfiltration capacity is key to designing and modeling a highly performing installation. We will study the basic components of reservoir routing, so often hidden by our modeling software. By applying systems thinking to our infiltration practice, we will consider alternatives to optimize designs and begin to understand the implications of our decisions. Maybe you have some of these questions?

• For a given storage volume, is a deep practice better than a shallow one?
•  Are there benefits to designing narrow practices rather than broader areal practices?
• Is the exfiltration to native soil significant during a design storm duration?
•  How can I model the drawdown time of a practice for design or review?
•  Is the exfiltration from a stormwater practice likely to cause mounding of the local water table?
• How might this affect the permissible groundwater separation?
•  How might this affect recommended setbacks?
• How can unacceptable mounding be mitigated in practice design?

Who should attend:

•  Professionals involved in designing or reviewing infiltration practices
• Engineers developing their knowledge in hydrogeology
•  Hydrogeologists increasing their understanding of design for stormwater management
•  People interested in algebraic modeling

Contact: Victoria Kring at or victoria.kring@trca.ca