This notice remains in effect until 9:00 AM on Tuesday August 25th, 2026, and will be updated as conditions warrant.
Flood Alert from the Niagara Peninsula Conservation Authority (NPCA), based on upcoming forecasts from Environment Canada’s weather specialists
Posted August 21st, 2026 on Niagara At Large
The Niagara Peninsula Conservation Authority (NPCA) is advising local municipalities, emergency services, and the public of the potential for flooding within its jurisdiction. This includes the Niagara Peninsula, the southeastern portion of the City of Hamilton, and the eastern portion of Haldimand County.
A slow-moving weather system is expected to bring thunderstorms and significant rainfall from Saturday, August 22, through Monday, August 24. Total rainfall amounts of 40 to 60 mm are possible, with locally higher amounts where thunderstorms develop. Thunderstorms may produce an additional 15 to 25 mm in affected areas.
Major flooding along larger watercourses is not currently anticipated. However, intense rainfall may cause flash flooding along small and urbanized watercourses, rapid increases in water levels, and localized flooding in low-lying or poorly drained areas. Current water levels remain well below critical elevations.
Residents are strongly advised to stay away from creeks, rivers, and other waterbodies. Water levels may rise quickly, and banks may become slippery and unstable. Children and pets should be kept away from waterways.
Property owners are encouraged to clear debris from culverts, catch basins, and ditches. Municipal and regional staff are advised to inspect stormwater infrastructure and monitor known flood-prone areas.
The NPCA will continue to monitor conditions closely and issue updates as required. Current flood status information is available at:
- * https://npca.ca/flood-status<https://npca.ca/flood-status?utm_source=copilot.com>
- * https://npca.ca/stream-flow-monitoring<https://npca.ca/stream-flow-monitoring?utm_source=copilot.com>
An Afterword from Doug Draper at Niagara At Large – This online news and commentary site will do its best to post any updates on this possible rainstorm througth the weekend. In the meantime, I don’t want to hear from a single person who says that all of this severe weather we have been enduring this summer has nothing to do with climate change. If that’s the way you feel, please pack your bags and move to Trumpland.
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