The film "Z for Zachariah" briefly uses Welch as a location. You can see the film's trailer by going to the link at the end of this message. The film tells a story of a post-apocalyptic world that has been damaged in a nuclear war. The trailer briefly shows a main character walking through Welch. If you ever lived in Welch, you will know exactly what you are seeing. The scene changes to a green, pleasant landscape of New Zealand, where the bulk of the film was shot. If you can't get the link to work, open your browser and search for:
Z for Zachariah trailer
... and that should give you a Youtube link to see the trailer.
The movie "Z for Zachariah" is now available on Netflix (and maybe other services.) I have not seen the film. If you order it, you should know ahead of time that Welch scenes occupy only a small part of the film.