Watershed Conditions Statement : Flood Outlook – Lake Ontario Shoreline

Watershed Conditions Statement : Flood Outlook – Lake Ontario Shoreline

Posted April 18, 2019


The Hamilton Conservation Authority (HCA) is advising of strong shore-bound winds forecasted for Friday, April 19, 2010 and Saturday, April 20, 2019. There is potential for shoreline erosion and localized flooding along Hamilton’s shoreline to occur, due to the storm surge and wave action caused by these winds.

Local forecasts expect sustained winds from the north-east of up to 29 km/hr, with maximum wind gusts of up to 49 km/hr. Resulting wave heights of up to 0.9 m are expected.

HCA wishes to remind residents to exercise caution near lakefront areas during this time, as the combination of high winds, high water levels in the lake and wave action may pose significant erosion, flooding and public safety hazards.

A close watch on shoreline and weather conditions is recommended. HCA staff continue to monitor Lake Ontario wind conditions and lake levels closely.

Currently, the Lake Ontario water level is approximately 75.2 m IGLD85, which is about 35 cm above average for this time of year. For reference, the HCA shoreline flooding hazard level used for planning and development review is 78.5 m (which includes a lake level of 76.00 m and 2.5 m of wave action).

This Lake Ontario Shoreline message is in effect until Sunday, April 21, at which time it will be updated. Otherwise, the message will be cancelled Tuesday, April 23. HCA will issue updates prior to April 21 as warranted.

For further information or questions regarding this message, please contact:

Alex Nizharadze, P.Eng., Water Management Specialist

Phone: 905-525-2181 ext 232

Fax: 905-648-4622 

Email: Alex.Nizharadze@conservationhamilton.ca