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Lake Simcoe Region Conservation Authority

Skip Navigation LinksLake Simcoe Region Conservation Authority > Watershed Health > Flooding
​​​​​​​​an image of flooding over a road


Floods are the most frequent natural hazard in Canada. And they can happen at any time of the year, not just in summer. Floods can also happen to anyone. Even if you've never experienced flooding before, it does not mean you won't in the future.

Don't wait until a flooding emergency happens to you… take the time now to understand your risk and prepare for a flood emergency.

According to the study, Canadian Voices on Changing Flood Risk, published in April 2017, 94% of people living in flood risk zones didn't know they were at risk.

On this page, we will help you:​​

  1. Understand how to find out what your flood risk is
  2. Explain our role in flood protection
  3. Provide you with resources to help protect yourself from flood

Understanding your flood risk

Approximately 40% of the Lake Simcoe watershed​ is regulated by LSRCA. Regulated areas contain unique environmental significance or feature natural hazards for the watershed. 

Regulated areas include flood prone areas but are much more than flood zones. They could also be land that is subject to erosion, or adjacent to streams or rivers, or wetlands, among a number of other reasons. Building and development in these areas is regulated by LSRCA to make sure the activity does not cause environmental damage to the watershed and keeps people and property safe.

Our online maps are available 24 hours a day, 7 days a week. You can use the maps to look up your property to see if it lies within a “regulated area".

Access the regulation maps here

Remember, being in a regulated area doesn't necessarily mean you're in a flood zone. It could be regulated for a number of reasons and only qualified staff at LSRCA can understand our maps in enough detail to know the reason for the regulation.
If you find out you're in a regulated area, contact us​ to find out the reason for the regulation.

Our role in flood protection is prevention

Our role is to protect people and property from flooding long before the rain begins. We work to prevent or minimize the impacts from floods by:

  • Regulating development (building) in flood prone areas and other areas that protect us from flooding, such as wetlands.
  • Maintaining a flood forecasting and war​ning system. We have a staff team that monitors watershed conditions, tracks weather, and issues flood alerts to local authorities (emergency services, municipalities, school boards, etc.). The purpose of this service is to reduce risk to life and damage to property by providing local agencies and the public with notice, information and advice so they can respond to potential flooding and flood emergencies.​​

​​What you can do to reduce the chances of being flooded?

  • Understand your insurance ​​policy. Regardless of where you live, you should understand your insurance coverage. Are you covered in the event of flooding? What about sewage backup? Speak with your insurance company to understand what is and isn't covered by your policy. Do not assume you're covered in the event of a flood. It could be a very costly assumption!

  • Plan for an emergency. Everyone should have a 72 hour emergency kit on hand. Remember emergencies can happen for reasons other than flooding. The recommendation is that your emergency kit should contain enough supplies for yourself and your loved ones for at least 3 days.

  • Protect your property with flood-readiness fixes. Have you taken a look around your property to make sure it's as flood proof as it can be? There are some property improvements you can make to help reduce the chances of damage from flooding.

Flooding Frequently Asked Questions

We frequently get questions about:
  • ​Who should I call if my neighbour's property is draining into mine?
  • My basement is flooding. Who can I contact to help?
  • What do I do if I see sticks or branches (i.e., woody debris) in a river? What do I do if I see a blockage in the river and i am concerned about flooding? 
Find out the answers to these and more on our Frequently Asked Flooding Questions page.