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Trent-Severn Waterway National Historic Site

Water Management Updates

Water Level Management Update – April 13, 2016

Parks Canada's water management team continues to actively monitor water levels and flows, snow and weather forecasts across the Trent-Severn Waterway. These factors are used to determine dam operations on a daily basis to mitigate flooding impacts as much as possible.

For information regarding flood planning or protecting your home or property, please contact your local municipality.

For more information regarding the flood status and what to expect in your area, please visit the website of your local conservation authority. These are Kawartha Conservation, Otonabee Region Conservation Authority, Ganaraska Conservation Authority, Lower Trent Conservation Authority, Lake Simcoe Region Conservation Authority or, in all other areas of the Trent and Severn Watersheds, the Ontario Ministry of Natural Resources and Forestry.

Is your dam wide open?

You may notice that not all dams you see are wide open, but Parks Canada is moving as much water downstream as possible. The dams on the system are not of uniform capacity and there are many factors to consider, such as limitations caused by infrastructure and other natural restrictions. In addition, it takes multiple days for water to move through the system, and upstream dam operations need to be coordinated with those downstream.

Haliburton and Northern Areas

On the Burnt River system flows continue to decline. Lake levels will begin to level off and possibly increase over the next week.

On the Gull River reservoir Lakes remain over filled . The second peak on the Gull River is occurring and water levels are expected to remain high through Minden and in reservoir lakes.
Water levels and flows are also declining on the Nogies Creek, Mississagua River, Eels Creek and Jack Creek systems.

Kawartha Lakes, Peterborough and Otonabee River

Water levels are being equalized across the Kawartha Lakes and the Otonabee River flows are on a gradual decline.

Rice Lake and Lower Trent

Levels on Rice Lake are still increasing slowly. Water levels will remain high through the Lower Trent river reaches and specifically Percy Reach, Lower Hastings, and Lower Glen Ross. The decline in flows from the Crowe River will assist in reducing water levels downstream of Crowe Bay.

Severn River

Flows have been gradually increased out of Lake Simcoe as flows decline on the Black River. Log operations at the Lake St. John dam will begin this week.


The Trent-Severn Waterway continues to work with local conservation authorities, municipalities and the Ministry of Natural Resources to ensure that accurate water shed information is relayed to the public. For up to date warnings and watches with regards to water levels in your region please click on the following links: