Water management update – Rideau Canal

July 10, 2018 by

Locks 01The following was submitted by Parks Canada: Parks Canada's water management team continues to actively monitor water levels and flows, and weather forecasts across the Rideau Canal. These factors are used to determine dam operations on a daily basis for the Rideau Canal.

For more information regarding watershed status, please visit the website of your local conservation authority. These are the   Cataraqui Region Conservation Authority and the Rideau Valley Conservation Authority.


Rainfall amounts for May and June have been below normal. The 14 day forecast suggests continued high temperatures with little to no rainfall in the first six days and some potential rainfall in the 7 to fourteen day range.

Cataraqui River

The lack of rainfall and high temperatures is resulting in continued water level declines on the Cataraqui Lakes. Based on the current forecast, the boat draft on the Cataraqui Lakes will decrease. Forecasted draft can be found on the Parks Canada Water Management InfoNet: https://www.pc.gc.ca/en/lhn-nhs/on/rideau/info/infonet

Tay River

Bobs Lakes is near average level for this time of year. Outflows from Bobs Lake will be increased this week which will bring up the water level on Christie Lake and increase the flow rate down the Tay River.

Rideau River

Wolfe Lake is near average level for this time of year. Outflows will be increased from Wolfe Lake in order to reduce the rate of decline on Upper Rideau Lake which is below average for this time of year. Big Rideau is near long term average. Levels in the river from Smiths Falls to Ottawa all remain in navigation range.