Water Management Update – Mar24/21

From the TSW:


The five-day forecast suggests 30-45 mm with air temperatures reaching double digits in the Haliburton areas.  


With the onset of the snowmelt and forecasted amount of rain coupled with warm temperatures, flows and water levels are expected to increase at all locations as the impacts of the rain and melting snow work their way through the system.

The Trent Severn Water Management team will be active, and the changing conditions will be closely monitored.   Any watershed conditions updates will be released by your Conservation Authority or local Ontario Ministry of Natural Resources and Forestry District. 

Ice on shorelines

The temperature variations around and above the freezing mark makes ice weak along the shoreline, which is then easily broken and moved by windy conditions. The areas subject to the greatest impact are those facing the primary wind direction. In the event of strong wind conditions, the public should be aware of possible onshore ice movement leading to shoreline damage. The current forecast winds are not overly high. With the warmer temperatures persisting into next week, ice-out should continue. 

Haliburton and Northern Areas 

With the recent warm temperature event, water levels and flows conditions correspond to the onset of the melt and are rising in northern areas. Snow amounts still remain but are below average for this time of the year in the most northern areas of the Gull River system. Most lakes on the Gull River and Burnt River systems remain below average but are rising due to the onset of the melt. Lake levels are monitored daily and assessed in relation to estimated runoff amounts. The flows on Gull River and Burnt remain below average. Flows are on both rivers are anticipated to increase. 

Kawartha Lakes and the Otonabee River

Most Kawartha Lakes are below average. Levels on the Kawarthas are expected to rise due to increasing inflows from the Haliburton areas and the forecasted amounts of rainfall. Flows on the Otonabee River are below average for this time of year and will continue to increase. 

Rice Lake and the Lower Trent

Water levels on Rice Lake and the Lower Trent are anticipated to increase due to increased inflows from local creeks, the Otonabee River, Crowe River and the forecasted rainfall.