There are only 10 entries in the SSR of Sasquatch 12 feet or more, one of which was just added a few minutes ago. Two of them are from the same general location in Alberta.
Only 4 of the 10 entries show a height of 13 feet or taller.
The tallest report is 16 feet, and it's always been my opinion that it is an exaggeration, made by kids in Ohio. (link)
I first reported that my own sighting was of a sasquatch 10 feet tall. After further investigation, I changed it to 9 feet. I only saw an arm as it ducked away, and the top of that arm was at about 8' 4".
It was my own experience that showed me how difficult it really is to determine height. You need to have something to compare to, like a tree branch, to get it right.