SNC undertakes technical studies to better understand natural hazards throughout its jurisdiction. To identify and map natural hazards, studies use a combination of: 

• field surveys;
• historical records;
• environmental monitoring; and
• computer modelling 
  
  

Natural hazard maps support municipal land use planning, emergency preparedness, infrastructure management, and decisions about where development can safely occur.

SNC works with partner municipalities to develop and update these maps as new information becomes available.

Not all natural hazards have been mapped. The absence of a mapped hazard does not necessarily mean that a property is free from flooding, erosion, or unstable soil or bedrock.

Under the Conservation Authorities Act and Ontario Regulation 41/24, SNC regulates certain activities in areas affected by natural hazards. Property owners planning construction, site grading, or other activities in regulated areas may require permission from SNC.

Property owners are encouraged to contact SNC before starting work to determine whether their property is within a regulated area and whether a permit or additional technical studies may be required.

Flood Hazard Mapping

Flood hazard mapping identifies lands that may be inundated during a regulatory flood event.

To learn more Flood Hazard Mapping - Frequently Asked Questions