https://wiki.ootrandomizer.com/index.php?title=Logic#Water_Temple

"Extra Key
The door leading to the highest water level changer is never locked in rando. This results in a spare key for this dungeon."

Both 3drando and n64 rando respect this, SoH rando does not.

SoH

N64