Welcome to NBMCA.ca

1972-2022 - 50 years of conservation!

NBMCA Offices Open By Appt Beginning May 9

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.

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?  


Eau Claire Gorge Conservation Area now open!

May 14, 2022

Eau Claire Gorge Conservation Area gates are now open! Hike the 1.9 self guided trail. Visit the replica loggers cabin. Take in the spectacular rapids and waterfalls where the Amable du Fond flows between steep rock walls. Hwy 17 east to Hwy 630. Follow the signs!


NBMCA Kicks off 50th Anniversary Celebrations on Earth Day!

April 22, 2022

Recognition of “watershed heroes”, raising funds for a “Boardwalk of Champions”, awarding student bursaries, and a return of the Mattawa River Canoe Race are some of the initiatives the North Bay-Mattawa Conservation Authority has planned for the celebration of its 50th anniversary this year, announced this morning on Earth Day.


Water Safety Statement Issued Apr 12

April 12, 2022

The North Bay-Mattawa Conservation Authority is issuing its fifth watershed conditions statement this spring due to a substantial amount of rainfall in the forecast for the next two days.  Although increased runoff due to snow melt and precipitation are in the forecast, flooding is not expected at this time.


Snow Pack Almost Gone

April 08, 2022

Two out of three snow survey stations now have very minimal snow bringing the average snow depth down 21.1 cm and the average water equivalence down 74.7 mm since the April 1 snow survey, reports the North Bay-Mattawa Conservation Authority which measures the snow pack as part of its flood forecasting program.

“The average snow depth for the three sites is 3.1 cm and the average water equivalence for the three sites is 12.7 mm,” said Angela Mills NBMCA’s Water Resources Specialist. “Last year at this time we had no snow,” she added. 


Flood Outlook Statement Issued Tonight

April 07, 2022

Continued snowmelt today following the recent rainfall has caused water levels on urban watercourses including Chippewa Creek to continue to rise and approach the top of bank in some areas this evening, prompting the North Bay-Mattawa Conservation Authority to issue a Watershed Conditions Statement – Flood Outlook.


The 2022 Mattawa River Canoe Race is back July 23, 2022! Check out the website for details.
Mattawa River Canoe Race

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