• April 5, 2022

Upper Mattagami Watershed Statistics April 5, 2022 Update

Upper Mattagami Watershed Statistics April 5, 2022 Update

Upper Mattagami Watershed Statistics April 5, 2022 Update 150 150 MRCA

Watershed Update – April 5, 2022

  • Generally, snow depth and water content conditions for this time of year are above normal. Water content variances are 110% to 202% above normal through the entire Upper Mattagami Watershed.
  • Current forecasts over the coming week show daytime temperatures ranging from 0°C to +9°C with minimal precipitation expected over the next 5 to 7 days.
  • Winter drawdown of Mesomikenda Lake is complete, and the Lake is set up to gradually begin building as inflows increase over the coming weeks. Drawdowns at Mattagami Lake and Peterlong Lake are nearing completion. With current dam set ups, elevations are expected to hold near the bottom of the operating ranges until inflows begin to increase in the coming weeks. Current inflows are relatively flat and beginning to increase slightly with the warmer temperatures and mixed precipitation received.
  • The enclosed portions of Town Creek and Crawford Creek are being closely watched by Authority and Municipal staff.

The next update will be issued on or about April 18.

If you have any questions or comments, please contact the Conservation Authority at 705-360-2660 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 2022.

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.