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?  



March 27, 2020

The North Bay-Mattawa Conservation Authority continues to follow the guidance of the North Bay Parry Sound District Health Unit to monitor the Novel Coronavirus (COVID-19) situation and respond appropriately.  We continue to examine our business practices to find a balance between our social responsibility to prevent the spread of COVID-19 and protecting our employees from potential exposure while continuing to deliver essential services.


NBMCA Updates Policies, Screening Maps - Public Comment Invited

July 07, 2020

North Bay-Mattawa Conservation Authority (NBMCA) has prepared two comprehensive documents as they relate to permitting and plan review and updated its approximate regulated area screening maps.  The public is invited to submit comments.


Chris Holmes awarded environmental award

June 23, 2020

(North Bay, Ontario, June 23, 2020)   East Ferris resident Chris Holmes has been recognized by the North Bay-Mattawa Conservation Authority Board of Directors for his environmental stewardship efforts.


Mattawa Island CA and Beach Open

June 02, 2020

Mattawa Island Conservation Area and beach are now open.  The basketball, volleyball and tennis courts, as well as the washroom, remain closed.  


Beaches open at Elks Beach and Eva Wardlaw Conservation Areas

May 29, 2020

Beaches at Elks Beach Conservation Area on Trout Lake, off Hwy 17 and Eva Wardlaw Conservation Areas, on Lake Nipissing off Lakeshore Dr. North Bay,  are now open effective May 29, 2020.


2019 Year In Review


Registration NOW OPEN for the 45th Annual Mattawa River Canoe Race - July 24, 2021



Want to see more NBMCA videos?  Subscribe to our YouTube Channel!