Flood Forecast and Monitoring

Mattagami River Flood 1996

Mattagami River Flood 1996

The Mattagami Region Conservation Authority works with other provincial and federal agencies in the monitoring of watershed conditions throughout the year. We use a system of streamflow gauges, snow courses and weather stations to collect a variety of environmental information that is used in the management of streamflows and water levels. The information we collect is used in warning watershed residents if there is a threat of flooding.

The majority of the work is undertaken through the Upper Mattagami Water Management Committee. This Committee is co-chaired by the Conservation Authority, the Ministry of Natural Resources and Ontario Power Generation. It also has representation from several stakeholder groups including cottagers, First Nations and the local trappers association. The Committee’s main purpose is to review watershed conditions and if necessary, issue flood advisories and watershed condition statements.

Use The Links Below For Further Information On Watershed Conditions


Watches, Warnings and Condition Statements

Current Dam Operations

Publications and Brochures

Flood Warning Manual 2018

Flood Forecast and Warning – What is it? (Pamphlet)

Some Common Questions About Floodproofing (pdf)

Sandbag Information (pdf)

Important Links

Weather Forecasts (Weather Network)

Weather Forecasts (Environment Canada

Historic Weather and Climate (Environment Canada)

Flood Information (Province of Ontario)