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 Service Delivery during COVID-19

August 04, 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 Reminds Public to Physical Distance, Mask in Conservation Areas

January 25, 2021

(North Bay, Ontario, Jan. 25, 2021)   There’s no better place to soak in the health benefits of being outdoors than in North Bay-Mattawa Conservation Authority’s 15 conservation areas and trails.   The areas and trails remain open during the current pandemic lock-down as long as people physically distance and wear a mask when that’s not possible.


Kate Pace Way closed to snowmobile traffic

January 20, 2021

Kate Pace Way

January 20, 2021 - Kate Pace Way between Cranberry Rd and Gibson Road is closed to snowmobile traffic due to the COVID-19 State of Emergency and the North Bay-Parry Sound District Health Unit closure of snowmobile trails.


Snow Survey Reading for January 15, 2021

January 15, 2021

(North Bay, Ontario, January 15, 2021)  With the above seasonal weather and little snowfall, snow depth has decreased by 1.7 cm and water content has decreased by 4 mm since last snow survey January 4, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program. 


Snow Survey Readings for January 4, 2021

January 04, 2021

(North Bay, Ontario, January 4, 2021)  Snow depth has increased by 7.9 cm and water content has increased by 37.6 mm since last snow survey December 15, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program. 


2019 Year In Review


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



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