From CEWF —
This update was posted by TSW on March 12th. We apologies for the slight delay in forwarding this out.
As stated in our previous post and in this update there is active dam work through out the system and lake levels are starting to come up, many with ice still in. Please remember to […]
Trent-Severn Waterway – Water Level Management Update – March 12, 2026 Read More »
Trent-Severn Waterway – Water Level Management Update – December 30, 2025
Parks Canada’s water management team continues to actively monitor water levels, flows, and weather forecasts across the Trent-Severn Waterway National Historic Site. These factors are used to determine dam operations on a daily basis.
Parks Canada maintains the Ontario Waterways Water Management InfoNet on the Trent-Severn […]
Trent-Severn Waterway – Water Level Management Update – December 30, 2025 Read More »
The TSW has issued this advisory for the navigation channels and not necessarily the reservoir lakes. All the dams are at their winter set levels and there is no indication that that is going to change. Having said this with little to no rain there will continue to be water loss and lower than normal […]
LOW WATER LEVEL ADVISORY Read More »
Click [here] to expand
TSW Releases Drawdown Forecast September 29 2025
TSW has posted their final drawdown forecast for the year. The log setting at all reservoir dams will be at winter set level in the next few days and many are already at winter set. The goal is to reach minimum levels by Oct 15 […]
September 29th Drawdown Forecast Now Available Read More »
Click [here] to expand
TSW Releases Drawdown Forecast September 21 2025
Conditions remain very dry. TSW continues all efforts to minimize impacts, but per the latest 2-week drawdown forecast.
There will be many lakes that will be significantly below their average annual minimum water levels by early October.
It will be important to assess one’s individual impacts and […]
September 21st Drawdown Forecast Now Available Read More »
Click [here] to expand
TSW Releases Drawdown Forecast September 15 2025
Check your lakes for the forecast. The values are for some lakes are approaching the average mark while others continue in the below average trend.
September 15th Drawdown Forecast Now Available Read More »
Flow reductions on the Gull River
Trent-Severn Waterway National Historic Site
September 12, 2025 – Haliburton, Ontario – Parks Canada is advising the public that flow reductions are currently taking place on the Gull River between Moore Lake (Elliot Falls Dam) and Coboconk Dam. These reductions are being carried out to conduct maintenance work at the control structures.
As […]
Gull River Reduced Flow Warning from TSW Read More »
Click [here] to expand
TSW Releases Drawdown Forecast September 8 2025
The march to winter set continues and many lakes are still ahead of where we normally are. Just over a month until the end of the drawdown season.
September 8th Drawdown Forecast Now Available Read More »
Click [here] to expand
TSW Releases Drawdown Forecast September 2 2025
As the drawdown is continuing on most reservoirs to maintain minimum flows downstream, the conditions on most lakes remain from 2 to 4 weeks ahead of the normal date for current levels.
September 2nd Drawdown Forecast Now Available Read More »
Click [here] to expand
TSW Releases Drawdown Forecast August 25 2025
The lower than normal lake levels continue. As we round out the summer we would like to remind everybody that the lower lake levels could affect your boat launches and docks. Take this information in to account when deciding when to take boats and docks […]
August 25th Drawdown Forecast Now Available Read More »
