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North Bay-Mattawa Conservation Authority

NBMCA was founded in 1972 by the Province of Ontario and its 10 member municipalities.
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.

Celebrating 50 years!

Boardwalk of Champions

Join in the celebration
and help us recognize
our unsung
watershed heroes!


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.


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!

Trails & Events

Looking to hike, bike, or ski?
Paddle a historic canoe route?
Explore our natural heritage?
Take part in an environmental festival or special event?  


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November 28, 2023

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Snow survey season begins

December 01, 2023

After this week’s snow squalls off Georgian Bay, there’s a fairly consistent layer of wet snow in our area, with less snow at the Chisholm snow survey station, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program. 


Donor thank you and ribbon cutting officially opens new boardwalks at Laurier Woods Conservation Area

November 16, 2023

(North Bay, ON.  November 16, 2023)   It takes a village to care for our watershed, and on November 16, Friends of Laurier Woods and the North Bay-Mattawa Conservation Authority came together to thank donors, funders, volunteers, and community leaders who contributed to the two new boardwalks at the much-loved Laurier Woods Conservation Area.


Water Safety Statement

November 06, 2023

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


Flood Watch and Water Safety Statement

October 27, 2023

A Flood Watch has been issued for the urban creeks in the City of North Bay.  A Water Safety Statement has been issued for all other areas of the watershed, according to the North Bay-Mattawa Conservation Authority (NBMCA).


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