Jaws 1, and I dunno, Steve...

Just watched the final scene BUT... you may be referring to the scene where the credits roll on the shoreline... I'm talking about the scene where Brody and Hooper meet and then begin paddling to shore using the air buoys. I just watched it, on YouTube... and I'd bet good money that's the Universal Backlot Pond.

You're the expert, however. - JamesJM