As part of Markham’s Flood Control Program, the City will be initiating a study to investigate flooding associated with drainage systems in Markham Village and Unionville.
The Markham Village area experienced considerable flooding during the July 2017 storm events.
The current storm sewer system does not have adequate capacity to handle stormwater runoff during large storm events. For the most part, the area was designed and constructed prior to 1978 when the City began requiring drainage system be designed for the 100 year storm event.
When the storm sewer system capacity is exceeded, flooding of basements, roads and properties is possible in this area.
The study aims to:
Once the study is completed, an implementation plan and prioritization strategy will need to be developed to define a timeline for design and construction of the mitigation works.