A Watershed Conditions Statement – Water Safety was issued for the Maitland River watershed this morning.
Severe thunderstorms that tracked through Southwestern Ontario overnight brought localized bands of significant rainfall to the Maitland watershed. As of 7:00 a.m. this morning, 12-hour rainfall totals ranged from 40 to 90 mm, with heaviest amounts generally concentrated within a corridor extending from Clinton to Listowel.
Significant river flooding is not expected but river levels can be expected to rise throughout the day, especially in the headwater areas of Harriston and Listowel. Smaller streams and rivers will respond quickly over the next few hours, while larger rivers can be expected to peak this weekend. Municipal officials are encouraged to monitor low-lying and flood prone roads and residents are reminded to use caution near all watercourses.
Campgrounds and within or near river lowlands are advised to be aware of the potential for fast changing conditions. Likewise, anyone thinking about canoeing or fishing along the river should be aware of this risk and postpone plans until river levels drop.
Rainfall and thunderstorm activity remain in the forecast for the next few days. Maitland Conservation staff will be closely monitoring the situation and will provide an update if conditions change. This message will remain in place until 9:00 am on Monday July 17, 2023.
Contact:
Jeff Winzenried, Water Resources Technician
[email protected]
Types of Flood Messages:
Watershed Conditions Statement – Water Safety – General watershed conditions are being assessed for high runoff potential that could lead to flooding, and to remind the public of general river safety issues.
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.