01/06/2015 07:28 EST | Updated 03/08/2015 05:59 EDT

Think the ice looks safe? Think again, police say

Days after a fishing trip ended in tragedy on Lake Scugog, police are warning residents to be careful on frozen lakes and rivers. And to demonstrate just how quickly a walk on the ice can go wrong, CBC's Lucy Lopez took a plunge with a little help from the marine unit of the York Regional Police.

"For walking, you want [the ice] to be at least four to six inches," said Sgt. Chris Hyland. "And then when you're getting into ATVs and snowmobiles you want to be eight to 10 inches."

Hyland said people have to be extremely careful right now because the ice is still forming. He says it takes at least 10 days of temperatures in the minus double digits to get good, thick ice. 

Click on the video to see the full story.