# Niagara Peninsula flooding and agricultural impact > Live situation record from CLSTR: https://clstr.news/situations/niagara-peninsula-flooding-and-agricultural-impact > Updated: 2026-09-02T13:47:00.000Z. Sources: 4. Developments: 2. The Niagara Peninsula has experienced significant weather-related disruptions following heavy precipitation events beginning in late July. Initial flooding and sewage backups impacted residential areas, businesses, and agricultural lands. In St. Catharines, some areas recorded nearly 400 millimeters of rain, leading to raw sewage flooding at the Club LaSalle. Local officials have called for infrastructure corrections to address issues related to regional stormwater management reservoirs. As the situation progressed, the Niagara Peninsula Conservation Authority issued flood warnings for the region, including southeastern Hamilton and eastern Haldimand County, due to potential flash flooding from severe thunderstorms. Concurrently, agricultural assessments are underway to determine the long-term impact on stone fruit crops, such as peaches and pears. Growers are monitoring for tree stress and root rot caused by prolonged submersion, which may affect yields in a region responsible for 95 percent of Ontario’s stone fruit. ## Timeline ### 2026-09-02: Niagara Peninsula faces flood warnings and agricultural damage assessments The Niagara Peninsula faces new flash flood risks due to severe thunderstorms, while farmers assess long-term damage to stone fruit crops following significant flooding earlier this August. 2 sources. https://clstr.news/cluster/niagara-peninsula-faces-flood-warnings-and-agricultural-damage-assessments ### 2026-08-24: Niagara Peninsula faces flooding and sewage backups Heavy rainfall in the Niagara Peninsula has caused widespread flooding and sewage backups, significantly impacting businesses, farms, and community centers like the Club LaSalle in St. Catharines. 2 sources. https://clstr.news/cluster/niagara-peninsula-faces-flooding-and-sewage-backups --- Cite as: Niagara Peninsula flooding and agricultural impact. CLSTR, https://clstr.news/situations/niagara-peninsula-flooding-and-agricultural-impact