It's a clip from one of my favorite dumb movies, ever: "Ruben and Ed".
This shot was taken at Pineview reservoir, only twenty minutes from where I live. This is where my pal Marlboro Man and I would spend our high school days taking his boat out and doing some serious water skiing. I can't remember just how many times I skipped school, but I'm sure that's one of the many reasons I almost flunked out. Thank goodness coach "C" and night school saved my sorry ass.
(Updated @ 11:20 PM MST: I heard that it was East Canyon reservoir, but upon further review, I have concluded that it is Pineview reservoir, which is about the same distance from where we lived and also a place where we sloughed school, bigtime. It would have made more sense to have filmed at Echo lake/reservoir. You'd have to see the film to get it.)