TSW Water Management Update – Apr 17/20

From the TSW:


The 7 day forecast is indicating temperatures close to zero degrees Celsius overnight and mixed precipitation amount of approximately 10  mm.


The watersheds of the Haliburton reservoirs experienced earlier than normal freshet which in combination with warmer air temperatures has resulted in the loss of the most winter snowpack.  The melt event generated higher than seasonal inflows and resulted in higher lake levels of the reservoirs. Given the remaining potential for seasonal rains in April and May, the public can expect lake levels to be held to current levels or lower to accommodate precipitation and to mitigate flooding while gradually achieving seasonal averages heading into summer. Currently flows have peaked and receding across the Trent-Severn Watershed. The weather forecast suggests that flows and levels should remain steady.

The Trent-Severn Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority

Ice on Shorelines

The freshet has increased water levels and as a result has moved the ice sheet on most lakes. As the ice sheet is not attached at the shoreline it can be moved by windy conditions. The areas subject to the greatest potential ice 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.

Haliburton and Northern Areas

In general, water levels in the Haliburton Reservoirs are above average; flows on the Gull and Burnt Rivers are below average. Levels and flows are expected to stabilize.


TSW website – https://www.pc.gc.ca/en/lhn-nhs/on/trentsevern/info/infonet/point-gestion-eau-water-management-updates