Basement floods are unfortunately common in many parts of Canada. Currently, a potentially serious problem is Basement floods. Many negative impacts from basement flooding add to the inconvenience and disruption of household habits. Water enters the basement as a result of certain events. This often occurs during periods of heavy rain, or during rapid snowmelt in the spring. In these cases, water infiltration occurs due to: A crack in the basement walls and Poor drainage quality of the perimeter drainage system failure location of overflowing gutter foundations or clogged downspouts. The basement can also be flooded due to an obstructed connection between the house and the main sewer of the street from a sewer backup, the failure of a sump pump used to pump water from the foundation drainage system.