When is it safe to walk on a frozen lake?

[Diane]

It depends on the size, the bigger the lake, the thicker you need it to be. Especially if its a lake that has a current running underneath it. Remember The Omen II?

We had a pond across the street that was about the size of a regular skating rink, and it had to be 6-7 inches thick in order for us to skate on it.