Snow Readings

With the significant amount of melt in the past week, the snowpack has decreased by 21.4 cm and the snow water equivalence has decreased by 65.3 mm since the previous snow survey on March 14, 2025, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program.

“The combined average snow depth is 30.5 cm and water equivalence is 83.3 mm at the three snow course locations”, said Angela Mills, NBMCA Water Resources Specialist. “This is within the range of normal for late March.”

 NBMCA is now measuring the snowpack weekly, to monitor conditions leading up to and during the spring freshet. This is a supplementary survey; more data is required for comparison to historical conditions. A Snow Survey page on our website is available with more snow survey program information and this season's measurements. https://nbmca.ca/watershed-management/snow-survey/

 Snow is measured for depth and water equivalence at three locations in the watershed.

 North Bay Golf and Country Club (Chippewa Creek Watershed, North Bay)

Corbeil Conservation Area (La Vase River Watershed, Corbeil)

Shirley Skinner Conservation Area (Kaibuskong River Watershed, Chisholm)

The North Bay-Mattawa Conservation Authority (NBMCA) was founded in 1972 by the Province of Ontario. NBMCA is one of 36 Conservation Authorities in Ontario responsible for watershed management on behalf of local municipalities, stakeholders, and the province