Water Management Update – Apr25/19

From the TSW:

Water Level Management Update – Thursday, April 25, 2019


The five day weather forecast is predicting  another heavy and widespread rain event with totals as high as 45 mm of precipitation with most of it occurring on Friday.  Air temperatures remain around double digits in Haliburtons and positive overnight.


With the ongoing snowmelt and significant received and forecasted amount of rain, coupled with warm temperatures, flows and water levels have increased and will continue 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 actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority or local Ontario Ministry of Natural Resources district.

Ice on Shorelines

The temperature variations 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 moderate, but may reach up to 30 km/ hr gusts. With the warmer temperatures persisting into next week, ice out should continue. 

Haliburton and Northern Areas

With the onset of the snowmelt and significant rain amounts, water levels and flows are rising rapidly in northern areas. Snow amounts are still remaining in the most northern areas of the Gull River system. Most lake levels on the Gull River and Burnt River systems are now above average, above full and/or quickly approaching full conditions due to the melt and received rain, and will continue to rise as a result of the forecasted rain amounts. Most Central Lakes are above average. Lake levels are monitored on a 24 hour basis and operational activities are currently conducted and based on the current watershed conditions, lake levels, estimated runoff amounts, snow pack conditions and forecasted rainfall. The flows on Gull River are very high, increasing with high runoff from the precipitation already received and expected to increase. The flows on the Burnt River declining, but remain high and expected to be sustained as a result of the forecasted precipitation.