The Lake Simcoe Region Conservation Authority advises that the water levels in Lake Simcoe are currently 219.23 m and are higher than average for this time of year. Currently, the water level in Lake Simcoe is rising 2 to 3 centimetres per day and is expected to continue rising.
The Lake Simcoe watershed received approximately 25 mm of rainfall over the past 24 hours. An additional 30 to 40 mm of rainfall is forecast beginning Tuesday and continuing until Thursday.
Forecasted rainfall combined with flows working through the system continue to drive lake levels upward. These higher-than-average water levels are posing a significant risk of flooding along the Lake Simcoe shoreline. Flooding has been reported in some localized low-lying areas, including the Jackson’s Point and Ramara areas. There is a high risk of dike failures in the Keswick, Kolbar and Bradford polders. Depending on wind conditions, there may be localized storm surge/seiche effects, leading to increased flooding.
Portions of the lake ice have melted and the remaining ice is expected to break up soon. Some ice remains and ice pile-up on shorelines is possible.
Lake Simcoe Water Level
Currently the lake level is approximately 8 centimetres higher than the average annual high-water level. The current water-level in Lake Simcoe is 219.23 m and is expected to increase further.
The following is a summary of the recent water levels on Lake Simcoe:
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April 13, 2026 (Current): 219.23 m
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April 12,2026:219.21 m
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April 8, 2026: 219.19 m
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March 31, 2026: 219.06 m
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March 5, 2026: 218.75 m
Water Safety
Please exercise extreme caution around all bodies of water. Please alert any children under your care to stay away from all watercourses and other bodies of water; and supervise their activities.
Residents, especially in the historically flood-prone areas, are advised to take necessary precautions to protect themselves, their pets, and their property.
This Shoreline Hazard Watch – High Risk will be in effect through April 27th, 2026, or until otherwise updated. This statement replaces the April 10th, 2026, statement due to expire on April 24th, 2026.