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!

Permits

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.

Science

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?  

News

Plans Underway for Return of Mattawa River Canoe Race June 8 2024

December 12, 2023

Plans are underway to host the Mattawa River Canoe Race on June 8, 2024, with the support of paddlers, volunteers, sponsors, and donors.

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Follow NBMCA on social!

November 28, 2023

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Snow Survey Readings for March 15, 2024

March 15, 2024

There was no snow to measure at the local monitoring locations reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program.

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Snow Survey Readings for March 8, 2024

March 08, 2024

The snowpack has decreased by 14.8 cm and the snow water equivalent decreased by 48.7 mm since the previous snow survey on March 1, 2024, reports the North Bay-Mattawa Conservation Authority (NBMCA) who measures snow depth and water content as part of its Flood Forecasting and Warning Program. Patches of snow remain in forested, shaded, and elevated areas, particularly in the northern parts of the watershed.

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Flood Watch for all areas within NBMCA watershed, except Lake Nipissing Shoreline and Ottawa River at Mattawa

March 07, 2024

A Flood Watch has been issued for the North Bay-Mattawa watershed, except for the Lake Nipissing shoreline and Ottawa River at Mattawa areas, according to the North Bay-Mattawa Conservation Authority (NBMCA).

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