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North Bay-Mattawa Conservation Authority
As a community-based, non-profit environmental organization, NBMCA is dedicated to
conserving, restoring, developing and managing renewable natural resources on a watershed basis.
NBMCA is one of 36 Conservation Authorities who are members of Conservation Ontario.
of the Algonquin People and the Metis Nation.
Want to honor a Watershed Champion?
Boardwalk of Champions
Our watershed overflows with champions, people whose actions - big and small - have contributed to the health and well-being of our families, our neighbourhoods, our communities, our environment and our watershed.
Permits
Development and On-site Sewage
Permits are one tool for balancing human needs with the needs
of the natural environment, protecting people and property
from natural hazards.
Science
Integrated Watershed Management
From water quality monitoring and flood forecasting to drinking water source protection, NBMCA uses science to make watershed management decisions.
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Conservation Areas
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MoreSnow 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.
MoreFlood 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.”
MoreSnow 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.
MoreLow 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.”
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