The Hamilton Conservation Authority (HCA) is advising that water levels and flows in all watercourses within the HCA watershed are expected to increase significantly as a result of the forecasted rain and potential thunderstorms for Thursday, May 1. Significant water safety concerns, as well as localized watercourse flooding of low-lying areas that typically flood during higher water levels, is expected.
Significant watercourse flooding also has the potential to occur.
There is considerable uncertainty as to the amount of rain and runoff that will occur. HCA staff continue to monitor watercourse, watershed, and weather conditions closely.
A continued close watch on local conditions is recommended. Also, HCA wishes to remind residents to use caution near all water bodies and structures such as bridges, culverts and dams during this time. Above normal water levels, faster moving water, rapidly changing levels and flows, and slippery banks may pose significant hazards. Adults are advised to keep children and pets away from water bodies at this time.
On Thursda, May 1, the Hamilton area is expected to receive between 10 and 50 mm of total rain (this includes 10 to 25 mm of rain, with an additional 10 to 25 mm possible if thunderstorms occur). Then on Friday, May 2, the Hamilton area is expected to receive between 2 and 13 mm of rain.
Current water levels and flows in watercourses within the HCA watershed are slightly elevated and do not pose significant water safety concerns. There are currently no observations or reports of significant watercourse flooding.
This message is in effect until Monday, May 5, 2025 at 4:30 PM, by which time it will either be updated or cancelled. HCA will issue updates prior to May 5 as needed.
There are no other active messages 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
