A Facebook contact sent me a link to a trailer (preview) of a low budget naturist comedy, "Act Naturally."
One of the scenes looks like it could have been at Deep Creek, but I'm sure it could have been at a similar location.
The IMDB.com page lists Colton, CA as one of the shooting locations, so I believe that must be Olive Dell Ranch.
This is the address to the film's Facebook page: "Act Naturally" Facebook Page
See if you recognize the creek location shown in the trailer.