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. 


NBMCA Issue Flood Outlook Statement

September 20, 2021

With 75mm of rain in the forecast over the next four days, the North Bay-Mattawa Conservation Authority has issued a Flood Outlook Statement for the watershed.


Service Disruptions

September 10, 2021

Office and Trail Service Disruptions for September.


“Michael's Boardwalk” dedicated today in Laurier Woods Conservation Area

September 03, 2021

Family and friends of 28-year old Michael Gauthier gathered in Laurier Woods Conservation Area this morning to dedicate a new 180 ft boardwalk built to honour his memory, his passion for the outdoors, and his love of Laurier Woods.


Chippewa Creek Project will Reduce Flood Risk, Enhance City's Active Transportation Network

July 29, 2021

(North Bay, July 29, 2021) The North Bay-Mattawa Conservation Authority will begin work next week on the remediation of 45m of Chippewa Creek at Oak St and reestablish the Kinsmen Trail link across the creek with a new pedestrian bridge.

“The benefits to the residents of North Bay are two-fold; the channel work will repair streambank erosion and help alleviate upstream flood hazards.  The new pedestrian bridge will provide a significant enhancement to the City’s active transportation network,” said Dave Mendicino, Chair of the North Bay-Mattawa Conservation Authority (NBMCA).


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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