News

Notice of Public Consultation Period – Floodplain Mapping

North Bay-Mattawa Conservation Authority (NBMCA), in partnership with the Province of Ontario, City of North Bay and the Municipality of Callander, has recently completed new and updated floodplain mapping. The public consultation period runs from January 20 to February 20, 2025.

Positions available on Source Protection Committee

Interested individuals are invited to fill vacancies on the North Bay-Mattawa Drinking Water Source Protection Committee (SPC), a local multi-stakeholder committee responsible for reducing risks to local municipal drinking water sources in Callander, Mattawa, North Bay, Powassan, and South River.

Snow Survey Readings for January 15, 2025

Snow depth increased by 11.5 cm and snow water equivalence by 23.0 mm since January 2 and is considered normal for this time of year at all sites.

Snow Survey Readings for January 2, 2025

The snowpack is dense and granular as a result of the recent rain and melt event, reports the North Bay-Mattawa Conservation Authority who measures snow depth and water content as part of its Flood Forecasting and Warning Program. 

NBMCA Watershed Conditions Statement - Water Safety, Dec 31, 2024

A Watershed Conditions Statement - Water Safety has been issued for the North Bay Mattawa Conservation Authority watershed jurisdiction, according to the North Bay-Mattawa Conservation Authority (NBMCA).

Flood Watch and Watershed Conditions Statement - Flood Outlook

A Flood Watch has been issued for the urban creeks in the City of North Bay and Watershed Conditions Statement – Flood Outlook has been issued for elsewhere in the North Bay-Mattawa watershed, according to the North Bay-Mattawa Conservation Authority (NBMCA).

Snow Survey Readings for December 16, 2024

The snowpack across the watershed is dense and is expected to melt with the above freezing temperatures forecast for today (Dec 16) and tomorrow, combined with approximately 10 mm of rain overnight. Last week’s Watershed Conditions Statement – Flood Outlook remains in place through Wednesday when temperatures are forecast to return to below freezing.

Flood Outlook - Watershed Conditions Statement

A Watershed Conditions Statement - Flood Outlook has been issued for the NBMCA jurisdiction, according to the North Bay-Mattawa Conservation Authority (NBMCA).

“The low-density snowpack across the watershed will experience melting with warm temperatures today and again early next week,” stated Angela Mills, NBMCA Flood Duty Officer. “While widespread flooding is not expected, flooding may occur in flood-prone and low-lying areas.”

Snow Survey Readings for December 2, 2024

Even though the snowfall in our area is lighter compared to areas further south, North Bay-Mattawa Conservation Authority (NBMCA) is reporting the first snow survey of the 2024-2025 season. NBMCA measures snow depth and water content as part of its Flood Forecasting and Warning Program. 

“Average snow depth for all sites is 4.6 cm (normal) and average water equivalence is 12.0 mm (normal),” said Angela Mills, NBMCA Water Resources Specialist. In 2023, the average snow depth for the three sites was 11.1 cm and water equivalence was 22.3 mm at this time of year” she added.

Low Water Level 1 Condition

Due to lower than normal precipitation and streamflow, Low Water Level 1 Condition has been confirmed for the NBMCA jurisdiction, according to the North Bay-Mattawa Conservation Authority (NBMCA).

“We have experienced drier than normal conditions since the end of July. The lack of rainfall has led to low streamflow across the watershed,” stated Angela Mills, NBMCA Duty Officer. “Water levels and streamflow are generally lowest in August and rise through the autumn, but this year, they have continued to drop.”