Watershed Update – May 5, 2023
- The snow course sampling sites, except for Gogama, were absent of snow and the consensus among the surveying organizations is that no further snow course sampling is expected. The Gogama snow course site water content reading was negligible and not recorded.
- Current forecasts over the coming week show daytime temperatures ranging from +16°C to +22°C with minimal precipitation expected over the next 5 to 7 days.
- Inflows across the Upper Mattagami watershed are higher than normal. Reservoirs upstream are nearing the top of their ranges, while upstream inflows are holding/slightly decreasing while the local inflows to Timmins have started to decrease.
Further updates will be issued as required.
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View OPG River System Data / Water Levels and Flow
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 2023.
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.