Visible crew/equipment: When Gort picks up Patricia Neal next to the flying saucer, you can see cables leading down to her body to keep her hoisted. (01:20:15)
Continuity mistake: After crossing the first rapids, Humphrey Bogart's shirt appears to be mostly wet in the back. When he talks to Miss Sayer, it's the front of it soaking wet. (00:39:15)