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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?  


Winter Hours

December 06, 2019

Service Disruption - NBMCA Parking Lot

July 12, 2019

(North Bay, ON - July 12, 2019) The parking lot and entrance roadway to NBMCA's office at 15 Janey Ave. North Bay and the Laurentian Escarpment Conservation Area will be under construction while the Near North District School Board undertakes a reconstruction of this area and the adjacent schoolyard to address parking and access to Vincent Massey Public School.


Snow Survey Results - November 29

November 29, 2019

Snow Survey Readings


(North Bay, Ontario, November 29, 2019)  Snow depth is now closer to the %normal and water content has increased due to the rain and warmer weather compared to the last snow survey readings two weeks ago.


Water Safety Statement for Watershed

November 20, 2019

(North Bay November 20, 2019)   Above average snow levels, warming temperatures and forecast rain have prompted the North Bay-Mattawa Conservation Authority to issue a Water Safety statement to caution area residents of the growing risks near and around area watercourses.


1st Snow Survey Readings for the 2019-2020 Season

November 15, 2019

(North Bay, Ontario, November 15, 2019)  Snow depth and water content are way above the long-term average for this time of year, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program. 


2018 Year in Review



Registration will be open December 15 for the 44th Annual Mattawa River Canoe Race - July 25, 2020



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