Regulation Maps

The Lake Simcoe Region Conservation Authority is currently undertaking the annual review and update of our regulation mapping in accordance with requirements of the Conservation Authorities Act and Ontario Regulation 41/24. The Regulated Area is made up of natural hazard lands, such as rivers, streams, floodplains, wetlands, valleylands, and Lake Simcoe shoreline. Regulatory mapping is available below.

A permit may be required for work within a Regulated Area.

Each year we review the most current information available to information the mapping update which may include: 

• Floodplain mapping updates
• Provincial wetland identification mapping
• Digital elevation models
• Shoreline hazard assessment studies
• Site-specific information on certain regulated natural features or natural hazards, as revealed through the planning process or permit application review and approval process

As part of the current update, the Lake Simcoe Region Conservation Authority retained D.M. Wills Associates Limited company in July 2023 to undertake a review and update of our floodplain within the Barrie Creeks subwatersheds. Advances in technology have allowed a more accurate depiction of the flooding hazards. The completion of this study coincides with the overall Regulation limit update under Ontario Regulation 41/24. The final report can be found here.

Additionally, other minor updates have occurred as a result of Provincial Wetland updates downloaded from the Ministry of Natural Resources and site-specific studies related to development approved through the Planning and Permit processes. 

You can review existing and new regulation limits through our online mapping tool below.

We provide opportunities for people to offer feedback and ask questions on specific studies as well as the updated mapping, study findings and policies. Inquiries can be sent to regulationupdates@lsrca.on.ca. We are currently within the 30-day public review period for these updates. Please note that the new regulation limits will be presented to the Board of Directors for approval during the December 2025 board meeting. 

Note that in the event of a conflict between the mapping and the description of the areas under paragraph 2 of subsection 28 (1) of the Act, the description of those areas in that paragraph and in section 2 of Ontario Regulation 41/24 prevails over the depiction of the areas in the maps.