Watershed Conditions Statement

Forecasts are predicting a significant amount of precipitation for the southwestern part of Ontario. Forecasts are still unclear with respect to rainfall and storm track, but currently the prediction is for between 25 and 45 mm of rainfall between Thursday evening and Saturday morning. Due to the recent events, some watercourses still have reduced capacity and the ground is not yet fully dry. Low lying and poorly draining areas still have standing/ponding water. This will cause greater runoff volumes than normal during this event.

Additionally, wind speeds are expected to increase on Friday as the low pressure system passes through the Essex Region. Winds will likely shift out of the north/northwest and increase in speed up to the 40 km/hr range over Lake Erie, with Pelee Island being susceptible to high water and wave action on the north and west shorelines. The elevated water levels together with increased wave activity increases the possibility for nearshore erosion, breakwall damage, and waves overtopping with splashing and spray.

People should take extra caution and avoid rivers, streams and shoreline areas during significant precipitation and wind/lake wave events. The combination of slippery banks, waves, waves overtopping breakwalls, and fast moving water can be dangerous. Standing water can also present its own unseen hazards. Children, pets, and livestock should be kept away from flowing, standing water, and shoreline/breakwall areas.

Officials will continue to monitor the forecasts and provide updates as required.

Tim Byrne
Director, Watershed Management Services
(519) 796-2300
April 25, 2019
6:55 pm
April 27, 2019 12:00 pm
Upon receipt, hand directly to the Flood Coordinator or Emergency Planner for your Municipality or Agency.
Upon receipt, hand directly to your newsroom.
Watershed Conditions –
Safety Bulletins:
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 –
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 Bulletins:
Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.
Flood Warning Bulletins:
Flooding is imminent or already occurring in specific watercourses or municipalities.