Welcome to NBMCA.ca

NBMCA offices closed Monday Oct 2 to recognize National Day of Truth and Reconciliation

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?  


Laurier Woods Revised Closure - Update #2

September 15, 2023

The temporary closure of Laurier Woods Conservation Area is rescheduled for a second time, due to the revised availability of the contractor who is replacing two boardwalks on the main trail.  Construction is expected to begin September 25, 2023. Laurier Woods remains open until construction commences.


Laurier Woods Boardwalk Update

September 05, 2023

The temporary closure of Laurier Woods Conservation Area is rescheduled to begin September 18 due to the availability of the contractor. This date coincides with the revised start date of construction of two new boardwalks.


Official opening of Pedestrian Bridge marks completion of Chippewa Creek Erosion Project

August 26, 2023

(North Bay, August 25, 2023)  The 28-metre pedestrian bridge over Chippewa Creek at Oak St, installed as part of the Chippewa Creek Erosion Remediation project, is now complete.


Laurier Woods Closed September 5 to October 10 for Boardwalk Replacements

August 22, 2023

(North Bay, ON.  August 22, 2023)  Two boardwalks on the main trail at Laurier Woods Conservation Area are being replaced this fall.  Access to the trails will be inaccessible due to construction, making closure of Laurier Woods and all its trails necessary from September 5 to October 10.  


Flood Outlook Statement

July 20, 2023


(North Bay July 20, 2023). A FLOOD OUTLOOK STATEMENT has been issued for the North Bay-Mattawa Conservation Authority (NBMCA) watershed.


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