Created excitement when one dived off the bridge into the river? (4,1,6)

'dived off the bridge into the river?' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'created excitement when one' is the wordplay.
I cannot really see how this works, but
'created' could be 'made' ('make' can be a synonym of 'create') and 'made' is located in the answer.
'excitement' could be 'splash' (I've seen this before) and 'splash' is found within the answer.
'one' could be 'a' (a thing is one thing) and 'a' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?