Welcome to NBMCA.ca

North Bay-Mattawa Conservation Authority

NBMCA was founded in 1972 by the Province of Ontario.
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.

NBMCA acknowledges that we are in Robinson-Huron Treaty territory, the Traditional Territory and Treaty Lands

of the Nbisiing Anishinaabeg, as well as the unceded and ancestral Traditional Territory
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.

Get Outside!

Conservation Areas

Looking to hike, bike, or ski?
Paddle a historic canoe route?
Explore our natural heritage?

News

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November 28, 2023

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Snow Survey Readings for April 1, 2025

April 01, 2025

There was no change in snow depth, while snow water equivalence increased by 19.3 mm since March 25, reports the North Bay-Mattawa Conservation Authority who measures snow depth and water content as part of its Flood Forecasting and Warning Program.

Water Safety Statement remains in effect

March 28, 2025

A Watershed Conditions Statement – Water Safety remains in effect for the North Bay-Mattawa watershed.

NBMCA appoints Carolyn J. Rodgers as new Chief Administrative Officer, Secretary-Treasurer

March 26, 2025

NBMCA is pleased to announce the appointment of Carolyn J. Rodgers as its new Chief Administrative Officer (CAO), Secretary-Treasurer beginning April 28. With a distinguished career in public service and environmental management, Rodgers brings a wealth of experience and a strong commitment to sustainable conservation practices and a community focused approach.

Snow Survey Readings for March 25, 2025

March 25, 2025

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.