Located in northeastern Ontario, the MRCA has a watershed area of over 11,000 square kilometers.


Are you planning development work near a watershed, river, stream, wetland, slope, or shoreline?
You may require a permit from the Conservation Authority.


The Mattagami Region Conservation Authority provides a variety of recreational opportunities throughout the City of Timmins through its system of Conservation Areas and Community Trails.

NEWS and Announcements

March 3

The MRCA distributes a Watershed Statistics Report every 2 weeks from March 1 until the end of the snow melt. This report is based on information collected from snow course readings and dam operations. Read the Watershed Update or see our Upper Mattagami River Watershed Statistics page to download the report.

February 17

As part of our watershed monitoring, staff conduct snow surveys on the 1st and 15th of each month throughout the winter. This information is shared on our Snow Surveys page.

November 11

Recreational Trail and Hersey Lake CA Safety Alert: Large trees are blocking the road to the Hersey Lake Conservation Area. Trees are falling throughout the trails due to the heavy ice. Staff will remove trees once it is safe to do so. Please stay out of the Hersey Lake CA and off the recreational trail system until we have a chance to evaluate the damage and safely address the issues.

November 4

Winter Trail Reminder: 
Trails outside the Conservation Areas (Gillies Lake and Hersey Lake) are not maintained between November 1 and April 30.
Bridge to Bridge Trail stairs from Norman St. to Lafleur Dr. are closed for the winter season.
The Lion’s Walk Trail is part of the OFSC snowmobile trails and should not be used by pedestrians between November 1 and April 30

October 14

The section of the Bridge to Bridge Trail connecting Gillies St. and Algonquin Blvd. is closed permanently effective October 14, 2022. See the notification here.

Flood Status

Mattagami River
Normal Water Levels
Porcupine Lake
Normal Water Levels
Kamiskotia Lake
Normal Water Levels

Low Water Status

Normal Water Levels

Contact Us

The Mattagami Region Conservation Authority office is located at:

100 Lakeshore Road
Timmins, Ontario
P4N 8R5

Tel:  705-360-2660
Fax: 705-360-2692
Email: [email protected]

Our office is open Monday to Friday from 8:00 a.m. to 4:00 p.m., closed between noon and 1:00 p.m.