2024 Mississippi Valley Watershed Fall Lake Draw Down Timetable

Wednesday, 02 October 2024

2024 Mississippi Valley Watershed Fall Lake Draw Down Timetable

The Mississippi Valley Conservation Authority’s annual fall draw down is underway.    
 
Draw downs on Shabomeka and Pine Lakes as well as the Carleton Place Dam began in September.
 
The draw down of Summit and Widow Lakes will start after the Thanksgiving weekend. Kashwakamak, Mississagagon and Big Gull lakes will begin a week later on Oct 21st . The drawdown on Mazinaw Lake will not start until early November to account for boat traffic through the narrows during hunting season. Winter target levels are normally reached before freeze up but are dependent on how much rainfall the watershed receives over the fall season. Seasonal conditions are expected over the next two months.
 
The following chart provides fall drawdown dates on lakes that are used to provide storage for flooding for next spring.

Lake / Dam

Drawdown Start Date

Drawdown End Date

 

 

 

Shabomeka Lake Dam

Mid September

Early October

Pine Lake Dam

Mid September

Early October

Mississippi Lake / Carleton Place Dam

Mid September

Early October

Kashwakamak Lake Dam

After Thanksgiving weekend (Mid Oct)

Early December

Mississagagon Lake Dam

After Thanksgiving weekend (Mid Oct)

Mid October

Big Gull Lake Dam

After Thanksgiving weekend (Mid Oct)

Mid November

Summit Lake Dam

After Thanksgiving weekend (Mid Oct)

Mid October

Widow Lake Dam

After Thanksgiving weekend (Mid Oct)

Mid October

Mazinaw Lake Dam

After hunting season (Mid Nov)

Mid December

Residents are urged to use extreme caution around these structures as strong currents will be present while water levels decrease to normal fall levels during this time and should ensure that all boats, floating docks, etc., have been removed. 

Daily water levels and flows are available on the MVCA website at http://mvc.on.ca/water-levels/
 
Contact: Jennifer North
Water Resource Technologist
613-253-0006 ext. 243
               www.mvc.on.ca

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