Water at top of niagara falls has temp of 10 C if it falls a distance of 50 m what is temp at bottom of falls?

Question

Water at top of niagara falls has temp of 10 C if it falls a distance of 50 m what is temp at bottom of falls?

Answer 1

I am not sure, but doesn't velocity and quantity of water have to be taken into account? knowing that it is a huge quantity my guess would be the difference would be very negligible. So pretty much no change.

Answer 2

The water will be the same temperature at the bottom.