Water temps and columns

[Bubba_Bruiser]

My question is...Say you have a 60 degree surface temp. How many feet down does that temp run until the water temp raises for the winter and lowers for the summer and by how many degress per column? I remember as a kid swimming in lakes and how the water would be warm on top, but when you dive to 10', it felt like it dropped 10 degrees. I don't know if it did, but if felt like it. I have never swam in the dead of winter, but I have always been told that it is opposite for the winter, and the deeper water will be warmer. I have never paid much attention to water temp, I just fish when I can, but I am broadening my horizons for unknown reasons. Maybe I have been led wrong all these years. Some one talk to me breaker 1-9.