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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?  


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.


Province moves to constrain conservation authority programs

August 21, 2019

(North Bay, August 21, 2019)   A letter from the Minister of Environment, Conservation and Parks request to conservation authorities to “wind down” activities the Minister suggests is outside their mandate blindsided and shocked the North Bay-Mattawa Conservation Authority (NBMCA).   


Three reappointments, one new face on Source Protection Committee

August 19, 2019

(North Bay, August 19, 2019)   Four people have been appointed for a five-year term to the North Bay-Mattawa Source Protection Committee (SPC), a local multi-stakeholder committee responsible for reducing risks to local municipal drinking water sources in Callander, Mattawa, North Bay, Powassan, and South River.  


Green Ride Supporting Green Jobs, Stewardship at NBMCA

July 30, 2019

(North Bay – July 29, 2019)  Zac Wagman arrived in North Bay this morning on his wooden bicycle, part of his four-month long cross-Canada cycling venture Project Learning Tree’s (PLT) “Green Ride”.   He is stopping in North Bay to meet with youth working at the North Bay-Mattawa Conservation Authority thanks to a PLT Green Jobs funding grant. 


2019 Mattawa River Canoe Race a Success - Results

July 30, 2019

Sixty-six teams from three provinces and two countries participated in North Bay-Mattawa Conservation Authority’s 43rd Annual Mattawa River Canoe Race. Paddlers launched from Olmsted Beach, North Bay and made their way through the 64 km trek, five mandatory portages and low water levels and high winds to Mattawa Island, competing for the top spot in the North Bay-Mattawa Conservation Authority’s race.


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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