• April 6, 2021

Upper Mattagami Watershed Statistics April 6, 2021 Update

Upper Mattagami Watershed Statistics April 6, 2021 Update

Upper Mattagami Watershed Statistics April 6, 2021 Update 150 150 MRCA


  • Generally, snow depth and water content conditions for this time of year are below normal. Water content variances are 2.3% to 55% below normal through the entire Upper Mattagami Watershed.
  • Current forecasts over the coming 5 days show daytime temperatures ranging from +8°C to +19°C , with minimal precipitation forecasted.
  • Winter drawdown of Mesomikenda, Mattagami Lake and Peter Long Lake are complete. Based on current snow values and forecasts, reservoirs on the Upper Mattagami River system have begun a gradual refill. The staged approach to refill is necessary to maintain some storage in the event of spring rain events, while at the same time maintaining the target for summer minimum water levels. Wawaitin GS (Kenogamissi) will also be refilled in the coming weeks using the same gradual, measured approach.
  • Town Creek, Crawford Creek and other area watercourses are flowing well. All watercourses will continue to be closely watched by Authority and Municipal staff. Stream flows and water levels continue to be monitored on a weekly basis.
  • The Timmins Flood Advisory Committee continues to hold weekly meetings via video conference.

The next update will be issued on or about April 16, 2021.

Did you know that you can sign up through the MRCA website to have flood alerts sent to your email address?

If you have any questions or comments, please contact the Conservation Authority at 360-2660 or via email at [email protected].

See our Upper Mattagami River Watershed Statistics page to download the current watershed statistics and for the full list of reports for 2021.

The information contained in this update has been gathered by Ontario Power Generation, the Ministry of Natural Resources & Forestry and the Mattagami Region Conservation Authority. The summary highlights dam operations and storages as well as snow depth and water content in comparison to historical norms.  Watershed surveys will be conducted on the 1st and 15th of each month until the snow cover has disappeared. Updates will be issued until such time any flood threat has passed.