The Lake Simcoe Region Conservation Authority

Riverine Flood Status
Lake Simcoe Shoreline Status
Low Water Status

Regulation Maps

The following maps show where land is regulated within the Lake Simcoe watershed. The overall Regulation Limit has been updated April 1, 2019 as part of an annual update process.

Approximately 29% (including Lake Simcoe) of the Lake Simcoe watershed is regulated by LSRCA. We regulate for a number of natural hazards, not just flooding. For example, the regulation areas also include steep slopes, erosion-prone areas and wetlands.   

Our online mapping shows the boundaries of the entire regulated area, which include all of the above noted hazards including their respective setbacks. In order to determine why a specific property is regulated, please contact our Permits and Regulations team.

Regulation Area Property Search

Search for properties using our Interactive Regulation Mapviewer.

PDF Maps

Our regulation maps are also available in PDF. The watershed has been divided into 117​ maps at a scale of 1:10,000. Each map is approximately 1.5 MB per map and takes 10 seconds to a few minutes to download, depending on your internet connection. Simply choose the map you want to view from the key map. Each map viewed from the key contains the current regulated area.

Important Notice:

​​​​​​Bill 23

With the passing of Bill 23, More Homes Built Faster Act, there are several changes that have impacted our permitting role as well as our work in planning and development reviews.

For clarification on these roles, please review Current Impacts of Bill 23​, including the Areas of Review Chart. 

Office Hours

Our new public office hours will be Tuesdays, Wednesdays and Thursdays from 8:30 am to 4:30 pm.
We highly recommend making an appointment in advance to ensure there is staff available to help you. 

Our team continues to work remotely. We are available via email, video or voice conference using Microsoft Teams or ZOOM. Please reach out to your planning or regulations contact by email about your file.

phone icon   Who to Contact 

Permits & Regulations
1-800-465-0437 Toll free

Submit electronic applications to​

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