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Lake Simcoe Region Conservation Authority

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 Current Flood Status

Flood Outlook
Flood Outlook

                                            WATERSHED CONDITIONS STATEMENT

                                                             FLOOD OUTLOOK


                                        Lake Simcoe Region Conservation Authority

                                         120 Bayview Parkway, Newmarket, Ont., L3Y 3W3

                                        Telephone: (905) 895-1281 Fax: (905) 853-5881



Issued to the following groups:


1)         Municipalities and Local Conservation Authorities

2)         School Boards, Police and Media

3)         Chippewas of Georgina Island First Nation

4)         LSRCA Board of Directors and all LSRCA Employees


Date:   September 21, 2021

Time:   4:00 p.m.


The Lake Simcoe Region Conservation Authority advises that that the Surface Water Monitoring Centre of the Ministry of Northern Development, Mines, Natural Resources and Forestry is forecasting a large, slow-moving frontal system to enter the Lake Simcoe watershed tonight and through tomorrow. The front is expected to bring widespread rainfall into the watershed, with 40- 60mm expected before Thursday, and the possibility of embedded thunderstorms contributing an additional 10- 20mm. Unsettled weather conditions are expected to follow the passage of the front into Saturday and could contribute even more rainfall.


The forecasted rainfall may result in flooding of low lying areas.  All watercourses in our area will experience higher than normal water levels and flows.  As a result, local streams and rivers will become dangerous, especially in the vicinity of culverts and bridges.  Children should be warned to stay away from all watercourses. 


This Watershed Conditions Statement will be in effect through Friday, September 24, 2021.

For further information, please contact the following person at (905) 895-1281:


Stephen Troan, C.E.T.

Duty Officer


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