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NBMCA’s role in the Flood Forecasting and Warning Program (FFW) is to monitor watershed conditions and communicate flood risk. We do not respond to active flooding, control water levels, or operate dams. Learn more.
North Bay-Mattawa Conservation Authority
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.
of the Algonquin People and the Metis Nation.
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Our watershed overflows with champions, people whose actions - big and small - have contributed to the health and well-being of our families, our neighbourhoods, our communities, our environment and our watershed.
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Permits are one tool for balancing human needs with the needs
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from natural hazards.
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Integrated Watershed Management
From water quality monitoring and flood forecasting to drinking water source protection, NBMCA uses science to make watershed management decisions.
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MoreWatershed Conditions Statement – Water Safety - July 28, 2026
North Bay-Mattawa Conservation Authority (NBMCA) has issued a Watershed Conditions Statement - Water Safety for the North Bay–Mattawa watershed.
“Thunderstorms on July 27, 2026, produced 40 to 60 mm of rainfall across portions of the North Bay-Mattawa watershed. As a result, water levels and flows in many rivers and creeks increased and have generally reached their peak,” stated Githan Kattera, NBMCA Flood Duty Officer. “Water levels are expected to recede across most of the watershed.
MoreHigh Winds No Match for Determined Paddlers during the Mattawa River Canoe Race
Despite challenging high winds on the water, the 48th Mattawa River Canoe Race delivered another exceptional day of paddling, camaraderie, and record-breaking performance. A total of 59 boats officially started the 64 km race while 5 competitors took on the shorter 13 km course.
Overall Winners (64 km): David & Keir Johnston of Sarnia and Strathroy claimed first place in the Pro C2 Men's category with a winning time of 6:13:45.
NEW COURSE RECORDS
Open SUP: Tim Oliver of Clarksburg broke the previous Stand-Up Paddleboard record by approximately 8 minutes, finishing in 6:47:15 (previous record: 6:55:42).
C1 Stock Open: Terry Link from Kirkland Lake broke the previous record by approximately 15 minutes, finishing in 7:49:45 (previous record 8:06:24).
C2 Stock Women’s: Ceilidh & Morgan Boyd from broke the previous record by approximately 32 minutes, finishing in 7:14:33 (previous record 7:47:37).
C2 Stock Mixed: Stephen Wasteneys & Leila Myers from Ottawa and Chelsea, Qc broke the previous record by about 15 minutes, finishing in 6:35:25 (previous record 6:50:44)
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End of Flood Warning – Lake Nipissing Shoreline, La Vase River Downstream of Lakeshore Dr. and Parks Creek
The FLOOD WARNING for the Lake Nipissing shoreline, La Vase River downstream of Lakeshore Dr., and Parks Creek has ended.
"Conditions across the watershed continue to improve following the spring freshet, with water levels and streamflows continuing to recede," said Githan Kattera, NBMCA Duty Officer. "Lake Nipissing is below the non-damage level and is continuing its seasonal decline. Tributaries including the La Vase River and Parks Creek have returned to typical seasonal conditions, and no flood concerns are present across the watershed at this time."
MoreFLOOD WARNING continues for Lake Nipissing Shoreline (Callander and North Bay), La Vase River downstream of Lakeshore Dr and Parks Creek (update)
A FLOOD WARNING remains in effect for the Lake Nipissing Shoreline, La Vase River downstream of Lakeshore Dr, and Parks Creek. The previously issued Watershed Conditions Statement – Flood Outlook has ended.
"The water level of Lake Nipissing is declining but still remains high and shoreline areas are vulnerable to winds and wave action. Water levels may fluctuate in response to southwest and west winds, which can temporarily enhance local water level by 10-15 cm," said Angela Mills, NBMCA Flood Duty Officer. "The water level of the Ottawa River at Mattawa has returned to seasonally normal conditions and are forecast to decline gradually.”
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