Residents of St. Catharines, Ont., are still facing the aftermath of recent severe flooding, with debris such as couches, mattresses, and drywall lining the streets following a series of major storms within a short period. Mayor Mat Siscoe described these storms as the most significant the city has ever experienced in quick succession over an 11 to 12-day period.
The initial storm was managed by the stormwater system, but subsequent storms overwhelmed the already saturated ground, causing widespread overland flooding and sewer backups into homes, with sewage entering some residences. Dave White, owner of White Orchard Farms, successfully protected his garlic crops during the recent storms by taking proactive measures based on past experiences and ensuring proper drainage on his land.
The flooding has led to a surge in restoration calls as properties are submerged once again, prompting concerns about the city’s drainage sewage infrastructure. Mayor Siscoe highlighted the challenges faced by the aging infrastructure and the need for significant investment to upgrade the system to cope with future extreme weather events.
The recent storms in the Niagara region exceeded the design capacity of the drainage infrastructure, with some areas receiving rainfall levels surpassing those of a 100-year storm. The overloaded system struggled to handle the successive storms, leading to water exceeding treatment plant capacities and entering a bypass state.
Efforts are underway to enhance the city’s flood resilience, including redesigning parks to absorb excess rainwater and implementing measures to retain stormwater in new developments. Mayor Siscoe emphasized the importance of provincial and federal funding to support the costly infrastructure upgrades required to mitigate future flooding risks effectively.