Welcome to NBMCA.ca

North Bay-Mattawa Conservation Authority

NBMCA was founded in 1972 by the Province of Ontario.
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.
NBMCA acknowledges that we are in Robinson-Huron Treaty territory, the Traditional Territory and Treaty Lands
of the Nbisiing Anishinaabeg, as well as the unceded and ancestral Traditional Territory
of the Algonquin People and the Metis Nation.

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?  


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November 28, 2023

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Flood Watch (North Bay urban creeks) and Watershed Conditions Statement: Flood Outlook (elsewhere) - June 21, 2024

June 21, 2024

(North Bay June 21, 2024). A Flood Watch has been issued for the urban creeks in the City of North Bay and a Watershed Conditions Statement – Flood Outlook has been issued for other areas of the North Bay-Mattawa watershed, according to the North Bay-Mattawa Conservation Authority (NBMCA).



June 10, 2024

Fifty-nine teams from across the province and a few from out of province and even one paddler from out of country participated in North Bay-Mattawa Conservation Authority’s Mattawa River Canoe Race presented by Susan Weiskopf, Senior Financial Planner - IG. Paddlers launched from Olmsted Beach, North Bay and made their way through the 64 km trek, five mandatory portages and average water levels to Mattawa Island, competing for the top spot in the North Bay-Mattawa Conservation Authority’s race.


105 paddlers in North Bay to race in the Mattawa River Canoe Race

June 07, 2024

One hundred and five paddlers in 59 canoes, kayaks and stand-up paddleboards will be leaving Olmsted Beach in the early morning of Saturday, June 8 in the North Bay-Mattawa Conservation Authority’s Mattawa River Canoe Race presented by Susan Weiskopf, Senior Financial Planner, IG.


For Immediate Attention

May 29, 2024

It is with regret that the NBMCA Board of Directors announces that Chithra Gowda has informed us of her resignation from her position as the Chief Administrative Officer at the North Bay Mattawa Conservation Authority effective June 10, 2024.  She is taking an exciting role with another Conservation Authority in eastern Ontario, and looking forward to being close to family living in the area.   


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