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Lake Simcoe Region Conservation Authority

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 Current Flood Status

Flood Warning
Flood Warning



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 and Police
3) Media
4)  LSRCA Board of Directors and all LSRCA Employees

Date: May 23, 2017
Time: 10 a.m.

The water level in Lake Simcoe is expected to continue to slowly drop through the week.  There continues to be an increased potential for flooding of low-lying lands adjacent to the lake.   The risk of flooding will be increased in localized areas due to wave action from winds.

The high lake levels will also continue to impact the dykes in the polder areas.  Polders are low-lying lands adjacent to bodies of water and protected by dykes.

 A summary of recent Lake Simcoe water levels can be found below: 
Date               -  Lake Simcoe Water Level  (metres above sea level)
May 16, 2017 -  219.27
May 17, 2017 -  219.27
May 18, 2107 -  219.26
May 19, 2017 -  219.26
May 20, 2017 -  219.26
May 21, 2017 -  219.25
May 22, 2017 -  219.25
Current Water Level:
May 23, 2017  - 219.25


The following table summarizes the weather forecast for the next four days including expected precipitation (Environment Canada, MNRF):

Weather Forecast

May 23, 2017
Mainly cloudy with 40 percent chance of showers. High 19.
Tonight:  Partly cloudy.  40 percent chance of showers. Low plus 9.
Wind: 20 km/h SW
24 Hr Rain:  2 mm

May 24, 2017
A mix of sun and cloud. 30 percent chance of showers. High 23.
Night: Cloudy with 70 percent chance of showers.  Low 12.
Wind:  -
24 Hr Rain: <1 mm

May 25, 2017
Periods of rain.  High 14.
Night: Cloudy with 60 percent chance of showers. Low 12.
Wind: -
24 Hr Rain: 15-20 mm

May 26, 2017
A mix of sun and cloud.  High 20.
Night:  Cloudy periods.  Low 11.
Wind: -
24 Hr Rain: <1 mm

Please exercise extreme caution around all bodies of water, and alert any children under your care of dangerous conditions and supervise their activities.

This Flood Warning will be in effect through Friday May 26, 2017.

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

Marianne Maertens, P. Eng.
Duty Officer

Flood Warning:  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.