Welcome to NBMCA.ca


North Bay-Mattawa Conservation Authority

NBMCA was founded in 1972 by the Province of Ontario and the NBMCA’s 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.

Be a Steward!

Prevent Erosion and Runoff!

Planting trees and shrubs along the shoreline or stream bank at your home, farm or cottage is one of the ways you can help protect and preserve water quality. 


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?  


NBMCA Delivers Essential Service During Stay-at-Home Order

April 13, 2021

During the Provincial Emergency and Stay-at-Home Order issued by the province on April 8, 2021, the North Bay-Mattawa Conservation Authority will continue to deliver programs that have been deemed an “Essential Business/Service” by the Ontario/Canadian government. 


Low Water Level Declared by NBMCA

June 16, 2021

Based on below average precipitation and stream flows in the watershed, the North Bay-Mattawa Conservation Authority (NBMCA) has issued a Level 1 Low Water Advisory for all areas in its jurisdiction.


Detour at Laurentian Escarpment Conservation Area to access trailhead

June 04, 2021

Laurentian Escarpment Conservation Area has a temporary detour set-up to access the trailhead at 15 Janey Avenue.  


Papineau Lake Conservation Area is now open

May 21, 2021

The dock that is removed annually in the fall at Papineau Lake Conservation Area has now been put back in.  



Conservation Areas Open; New Trail Bridge at Eau Claire Gorge

May 07, 2021

 (North Bay, Ontario, May 7, 2021)  North Bay-Mattawa Conservation Authority’s (NBMCA) 15 conservation areas and trails have officially opened for passive use while a few amenities, such as washrooms, remain closed due to COVID-19.



The 2021 Mattawa River Canoe Race has been cancelled due to COVID-19. Here's hoping we're back in 2022! 

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