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.
Special Lake Ontario Flood Watch
Special Lake Ontario Flood Watch Issued By Ministry of Natural Resources' Surface Water Monitoring Centre for July 7, 2017
Current flood information
Flood information updated as of: July 27, 2017 - 3:30 pm
Ontario flood map
Locally issued flood messages
Issued by MNRF Districts and Conservation Authorities
- Cataraqui Region - Flood Warning Issued for Charleston Lake and Flood Warning Extended For Lake Ontario & St. Lawrence River - July 26, 2017
- Central Lake Ontario - Flood Warning Update - Lake Ontario Shoreline - June 29, 2017
- Credit Valley - Lake Ontario Flood Watch - Message #3 - July 14, 2017 4:00 pm
- Crowe Valley - Watershed Conditions Statement – Water Safety - July 19, 2017 10:00 am
- Ganaraska Region - Flood Watch - Lake Ontario - June 20, 2017
- Hamilton - Flood Watch - July 27, 2017
- Lower Trent - Flood Warning Update for Lake Ontario/Bay of Quinte - July 14, 2017 2:00 pm
- Mississippi Valley - Flood Watch for Little Marble Lake and Dalhousie Lake - July 19, 2017 4:00 pm
- Quinte - Water Safety Statement Inland Rivers and Lakes and Flood Warning For Bay Of Quinte and Lake Ontario Shorelines in the Quinte Conservation Watersheds - June 28, 2017
- Rideau Valley - Rain Causing Higher Water Levels in Rideau River Watershed - July 26, 2017 12:30 pm
- South Nation - Flood Outlook for Inland Rivers and Lakes and Flood Watch St. Lawrence - Update #7 - June 22, 2017
- Toronto and Region - Watershed Conditions Statement – Lake Ontario - May 9, 2017
River Regulatory Agencies
- International Lake Ontario - St. Lawrence River Board - June 14, 2017
Issued to Local Authorities by the Surface Water Monitoring Centre
MNRF Southern Region
Water levels and flows across the region are mostly within the normal range for this time of year. The five day forecast indicates precipitation in the range of 0 to 5 mm.
MNRF Northeastern Region
Water levels and flows across the region are mostly within the normal range for this time of year. The five day forecast indicates precipitation in the range of 5 to 30 mm.
MNRF Northwestern Region
Water levels and flows across the region are mostly within the normal range for this time of year. The five day forecast indicates precipitation in the range of 0 to 25 mm.
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.