Conservation Halton advises that over the course of the day, our watershed has received between 25 and 50 mm of rain, with an additional 15 mm forecast to fall into the early evening. The Severe Thunderstorm Watch for Southern Ontario and a Severe Thunderstorm Warning for the City of Hamilton (issued by Environment Canada) remain in effect. The majority of the watershed creeks are running at or near bankfull conditions, and levels are anticipated to rise overnight, particularly for our larger watercourse systems (Grindstone, Sixteen Mile and Bronte Creeks). Water levels in the smaller urban creek systems are expected to recede, beginning this evening. Our reservoirs are still in range of our seasonal holding levels and have storage capacity available.
Widespread flooding is not anticipated, however fast flowing water and flooding of low lying areas and natural floodplains may be expected. Municipalities, emergency services and individual landowners in flood-prone areas should be on alert.
Conservation Halton is asking all residents to stay away from watercourses and structures such as bridges, culverts and dams. Elevated water levels, fast flowing water, and slippery conditions along stream banks make these locations extremely dangerous. Please alert children in your care of these imminent dangers.
Conservation Halton will continue to monitor stream flow and weather conditions and will issue further messages as necessary.
This Flood Outlook Statement will be in effect through to end of day Tuesday May 2nd, 2017.