Before the filming started, Katharine Houghton Hepburn injured his arm in a tennis match and planned to quit the film, but Henry tried his best to convince her. There is a scene in which Katharine Houghton Hepburn drags a canoe with the pain on his arm, but this section is omitted in the film.
All the stunts of Katharine Houghton Hepburn in "On Golden Pond" were performed by herself.
When filming the scene where Norman and Billy clung to the rocks to survive, Henry Fonda and Doug McKean had to wear diving suits due to the extremely low temperature of the lake.
When filming the scene where Ethel jumped into the water, Katharine Houghton Hepburn refused to wear a diving suit to ensure the real effect.
The scene of Norman and Billy crashing into a rock while driving a boat was repeatedly shot. This was because the wooden yacht used by the crew was so strong that the crew had to modify it to achieve the effect of the hull disintegrating in the impact.
