The height of victoria falls is \(63 m\). What is the difference in temperature of water at the top and at the bottom of…

The height of victoria falls is \(63 m\). What is the difference in temperature of water at the top and at the bottom of fall?
[Given \(1 cal =4.2 J\) and specific heat of water \(=1{\mathrm{calg}}^{-1}^\circ {\mathrm{C}}^{-1}\) ]