News & Events

Parks Canada – Water Level Management Update


Please see below for the water management update from the Rideau Canal for Monday, March 23rd, 2020.

Parks Canada’s water management team continues to actively monitor water levels and flows, and weather forecasts across the Rideau Canal.

Recently, Parks Canada launched the Ontario Waterways Water Management InfoNet on the Rideau Canal website at The InfoNet contains background information on water management practices, water management updates, frequently asked questions about water management, various reports on water management, and the most recent water levels of lakes along both the Rideau Canal and the Trent-Severn Waterway.

Of specific note is the water levels tool within the InfoNet which provides lake levels data from the last 30 days and graphic representation of levels for the current year. The information comes from hydrometric gauges located at key points along both waterways and is vetted by trained and experienced Parks Canada water management staff.

This information is intended as supplemental information only. Stakeholders should continue to refer to their respective Conservation Authority or the Ontario Ministry of Natural Resources and Forestry as the primary source for relevant flood forecasting information specific to their area.


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


The watersheds experienced an onset of warm temperatures recently and precipitation received over the last week, totalled approximately 10 to 25 mm of rain. This weather resulted in high inflows which have increased water levels on lakes and river reaches. The weather forecast suggests that elevated flows and levels should remain steady.
The snow on the ground is variable across the Rideau Canal. In general, the amount of snow increases as you move North from Lake Ontario. No snow remains in the Cataraqui Watershed while snow amounts in the Rideau Watershed range from low to moderate. The warmer weather in combination with the forecasted rainfall will likely remove all the snow. Flows in the Rideau Canal are anticipated to remain above average and water levels are expected to increase in all lakes and river reaches.

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

Cataraqui River

The Cataraqui River lake levels are near average for this time of year and are levelling off.

Tay River

Bobs Lake is above average level and levelling off. Christie Lake is above average. Flows on the Tay are above average.

Rideau River

Wolfe Lake is above average and outflows have been maximised. Upper Rideau is close to its seasonal average and Big Rideau Lake levels are above average and levelling off. Flows on the Rideau River are above average.