I have walked over plenty of iced over lakes in order to take short cuts while hiking. I got scared a few times because there were very slushy spots, but I did make it out safely. I would never walk over an icy river; even if it was slow moving water. Although, if the river is shallow enough then it might be safe, but still, never walk over an icy river!
Excellent information in a concise, easy-to-understand format. Ice fishing is gaining in popularity in the Pacific Northwest in recent years. Thanks for sharing!
To check the ice: use a stick/pole with pointy edge. If you can thrust through the ice with one blow it is not safe . Note ; the thickness of ice does not say all. In spring almost nothing.