TSW Water Level Management Update – March 30/21


The five day forecast is predicting less than 5 mm. Air temperatures will fluctuate but approach double digits in Haliburtons and will remain positive overnight towards the weekend.


With the ongoing snowmelt and significant amount of rain received over the course of last week, 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 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 ongoing snowmelt, water levels and flows are rising rapidly in the northern areas. Snow amounts are still remaining below the 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 are now above average and are rising due to the earlier than normal onset of the melt. Lake levels are monitored daily and assessed in relation to estimated runoff amounts. The flows on Gull River and Burnt River remain above average due to the snowmelt and operational activities. Flows on both rivers are anticipated to remain high. Most Central Lakes are rising due to the ongoing snowmelt and remain above average for this time of the year due to early snowmelt timing.