Water Level Update

CEWF Update: Coalition for Equitable Water Flow
April 16, 2018

From the TSW:

Parks Canada’s water management team continues to actively monitor water levels and flows, and weather forecasts across the Trent-Severn Waterway. These factors are used to determine dam operations on a daily basis for the Trent-Severn Waterway.


The 2 day forecast suggests additional amounts of precipitation reaching 25 mm of rain. Air temperatures are forecast to rise towards the end of the week with above 0°C at night in northern areas.


The recent precipitation event amounted to 80 mm with some solid accumulation across the TSW watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 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.

Haliburton and Northern Areas

The Haliburton reservoirs are below average and lake levels are increasing. (As of April 16th the water level at the Kennisis dam is exceptionally low.) The snowpack increased as a result of the recent lower than normal seasonal temperatures and solid precipitation events. Lake levels are monitored daily and assessed in relation to estimated runoff amounts, however they are susceptible to changes in response to the future precipitation amounts. The flows on Gull and Burnt Rivers are below the average for this time of the year.

Ice on Shorelines

The temperature variations around the freezing mark will make 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 suggests that these conditions are probable if the winds are high.

Kawartha Lakes and the Otonabee River

The Kawartha Lakes are about average with the exception of Buckhorn and Stony Lake which are below average; lakes are levelling or beginning to decline. Flows on the Otonabee River are below the average for this time of year and are increasing.

Rice Lake and the Lower Trent

Rice Lake water level is close to average and declining. Flows on the Lower Trent River are below average and increasing.

Severn River

Lake Simcoe water levels are on average and below rule curve. Lake Simcoe outflows are reduced. Flows on the Severn River are below the average and are levelling off. Operations for Lake St. John in preparation for increased flows on Black River are complete.


For more information

Visit the CEWF website

More information about water levels on the Kennisis lakes