Cancellation: Flood Watch – Lake Ontario Storm Surge – April 4, 2025

The Hamilton Conservation Authority (HCA) is advising that the Flood Watch – Lake Ontario Storm Surge message issued on April 1, 2025 has now been cancelled.

A separate Flood Watch – Inland Lake and River Flooding message remains active at this time.

For further information or questions regarding this message, please contact:
Jonathan Bastien, Water Resources Engineer
Phone: 905-525-2181 ext 138
Jonathan.Bastien@conservationhamilton.ca

Cancellation: Flood Watch – Lake Ontario Storm Surge – April 4, 2025

Become a Member!

HCA Quick Links

Conservation Areas

Activities

Join Our Mailing List!

Current Water Levels

Water Level Explanations

Flood Status Explanations

	Normal No low water conditions exist.
	Level 1 Water users are asked to voluntarily reduce consumption by 10 percent. Precipitation totals are less than 80 percent of long-term averages and/or 30-day average streamflows are less than 100 / 70 percent (springtime / otherwise) of the minimum of the long-term average monthly flows for summer months.
	Level 2 Water users are asked to voluntarily reduce consumption by 20 percent. Precipitation totals are less than 60 percent of long-term averages and/or 30-day average streamflows are less than 70 / 50 percent (springtime / otherwise) of the minimum of the long-term average monthly flows for summer months.
	Level 3 There is also potential for economic harm to water takers and/or significant harm to the ecosystem. The Hamilton Water Response Team may ask the province to impose mandatory restrictions on those holding Permits to Take Water. Precipitation totals are less than 40 percent of long-term averages and/or 30-day average streamflows are less than 50 / 30 percent (springtime / otherwise) of the minimum of the long-term average monthly flows for summer months.

	Normal No flood conditions exist.
	Watershed Conditions Statement - Water Safety High flows, unsafe banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
	Watershed Conditions Statement - Flood Outlook Early notice of the potential for flooding based on weather forecasts calling for heavy rain, snow melt, high wind or other conditions that could lead to high runoff, cause ice jams, lakeshore flooding or erosion.
	Flood Watch Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.
	Flood Warning Flooding is imminent or already occurring in specific watercourses or municipalities. Municipalities and individuals should take action to deal with flood conditions. This may include road closures and evacuations.