Flood Status

Watershed Conditions Statement – Flood Outlook


Date:                     June 18th, 2018


This notice is intended to update the public and local municipalities of the condition of water courses as it relates to the Niagara Peninsula and the eastern portion of Hamilton and Haldimand County.


The Niagara Region, eastern portions of Hamilton and Haldimand County are currently under a Severe thunderstorm Watch / Warning as issued by Environment Canada.  Forecasted rain in the amount of 25 to 50mm is forecast to coincide with the line of thunderstorms moving through our region.  This amount of rain falling in an hour could result in flash floods and elevated water levels in urban watersheds, areas located around the Shorthills area (Pelham, Thorold, St. Catharines) and smaller watercourses located throughout the peninsula.  Current water levels in local rivers and streams are well below critical thresholds at this time.  


The NPCA will continue to monitor these conditions and will issue further messages as required. Information on the Flood Status in the watershed and water levels within the streams can be found on the NPCA’s website at:





This notice is in effect until Tuesday, June 19th, 2018 and will be updated as required.



What if a Flood Message is Issued for Your Area?

  • Take heed of the message issued.
  • Be prepared to follow the advice and instructions of emergency response officials.

Monitoring weather and flood conditions is a shared responsibility of Conservation Authorities, OMNR, and Environment Canada. The OMNR Surface Water Monitoring Centre in Peterborough monitors weather forecasts and water levels across the province, providing the information to Conservation Authorities. Other information is also available from Environment Canada. Conservation Authorities and the Ontario Ministry of Natural Resources are responsible for forecasting where and when flooding is likely to occur and issuing appropriate messages. Advance warning of an impending flood allows municipalities and other government agencies to put emergency response plans into operation, and if necessary, evacuate communities. When flooding is possible or about to occur, Conservation Authorities (or the Ministry of Natural Resources in areas where there is no Conservation Authority) issue flood messages to municipal emergency management officials and the media. The municipal officials then take action to warn local residents. Flood messages are posted on Conservation Authorities’ websites. In some watersheds, members of the public can receive flood messages directly through e-mail and/or Twitter.

Flood Messages are shown on this site appear as a message in the bar under the navigation.

Conditions are within NORMAL limits. No flooding is expected.

High flows, unsafe banks, melting ice or other factors could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected

Early notice of the potential for flooding based on weather forecasts calling for heavy rain, snow melt, high wind or other conditions that could lead to high runoff, cause ice jams, lakeshore flooding or erosion.

Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.

Flooding is imminent or already occurring in specific watercourses or municipalities. Municipalities and individuals should take action to deal with flood conditions. This may include road closures and evacuations.