Flood Forecasting and Warning Program
Information about the Flood Forecasting and Warning Program, which prepares provincial and local authorities in the event of a flood.
Current flood information
Flood information updated as of: September 19, 2019 - 09:00 am
Ontario flood map
Locally issued flood messages
Issued by MNRF Districts and Conservation Authorities
MNRF Districts
None
Conservation Authorities
- Cataraqui Region - Watershed Conditions Statement - High Great Lakes Level - September 5, 2019
- Central Lake Ontario - Flood Watch - High Great Lakes Level - August 21, 2019
- Essex Region - Lake Erie - Flood Watch - Storm Surge - August 2, 2019
- Essex Region - Lake St. Clair - Flood Watch - Storm Surge - August 3, 2019
- Ganaraska Region - Watershed Conditions Statement - High Great Lakes Level - September 6, 2019
- Kettle Creek - Watershed Conditions Statement - Storm Surge - September 3, 2019
- Lakehead Region - Flood Watch - High Great Lakes Level - September 10, 2019 09:30 am
- Long Point Region - Flood Watch - High Great Lakes Level - July 5, 2019
- Lower Thames Valley - Lake Erie - Watershed Conditions Statement - Storm Surge -
- Lower Thames Valley - Lake St. Clair - Watershed Conditions Statement - Storm Surge - September 9, 2019
- Lower Trent - Flood Warning - High Great Lakes Level - August 29, 2019
- Maitland Valley - Flood Watch - Storm Surge - August 9, 2019
- Niagara Peninsula - Lake Erie - Watershed Conditions Statement - High Great Lakes Level - September 6, 2019
- Niagara Peninsula - Lake Ontario - Watershed Conditions Statement - High Great Lakes Level - September 6, 2019
- Quinte - Flood Watch - High Great Lakes Level - September 13, 2019
- South Nation River - Watershed Conditions Statement - High Great Lakes Level - August 20, 2019
- St. Clair Region - Lake Huron - Watershed Conditions Statement - Storm Surge - June 21, 2019 02:00 pm
- St. Clair Region - Lake St. Clair - Watershed Conditions Statement - Storm Surge - June 21, 2019 02:00 pm
River Regulatory Agencies
Provincial flood messages
Issued to Local Authorities by the Surface Water Monitoring Centre
- Lake Erie (Eastern Basin) Flood Watch Issued By Ministry of Natural Resources and Forestry's Surface Water Monitoring Centre for September 5, 2019
- Lake Superior Flood Watch Issued By Ministry of Natural Resources and Forestry's Surface Water Monitoring Centre for September 5, 2019
MNRF Districts
None
Conservation Authorities
None
MNRF Southern Region
Water levels and flows remain in the seasonal range for most of the region.
Forecast rainfall over the next five days ranges from 10 to 30 mm.
Great Lakes water levels remain near or above all time high values. Given the above normal water levels on the Great Lakes, wind action and storm surge may pose additional risk at thresholds not normally considered a concern.
MNRF Northeastern Region
Water levels and flows remain in the seasonal range for most of the region.
Forecast rainfall over the next five days ranges from 15 to 50 mm.
Great Lakes water levels remain near or above all time high values. Given the above normal water levels on the Great Lakes, wind action and storm surge may pose additional risk at thresholds not normally considered a concern.
MNRF Northwestern Region
Water levels and flows remain in the seasonal range for most of the region.
Forecast rainfall over the next five days ranges from 10 to 40 mm. Higher local accumulations are possible should thunderstorms develop.
Great Lakes water levels remain near or above all time high values. Given the above normal water levels on the Great Lakes, wind action and storm surge may pose additional risk at thresholds not normally considered a concern.
Flood Message Definitions
Provincial flood messages
There are 2 types of provincial flood messages:
- the Provincial Flood Watch, which provides consistent and timely technical information about the potential for flooding
- the Provincial Watershed Conditions Statement, which provides information on provincial watershed conditions as they relate to flood potential, and an outlook on expected spring flood conditions
Local flood messages
There are 3 types of local flood messages:
- flood warning: flooding is imminent or already occurring
- flood watch: there is the potential for flooding
- watershed conditions statements: flood Outlook (an early notice of the potential for flooding based on heavy rain, snow melt etc.) and water safety information.
Who to contact for flood information
Your local Conservation Authority is responsible for local flood messaging.
Your local municipality is responsible for on-the-ground flood response.
If you live in a community that is not serviced by a conservation authority, any flood watches or flood warnings in your area are issued by the nearest Ministry of Natural Resources and Forestry district office.