Chapter 2 - Energy, Energy Transfer, and General Energy Analysis - Problems - Page 98: 2-15

$W_{g}=137.34MW$

In this case we are working with potential energy: $e_{p}=e_{mec}=gz=(9.81\frac{m}{s^2})*(80m)=784.8\frac{J}{kg}$ For the flux of mass: $m=\rho V=(1000\frac{kg}{m^3})*(175\frac{m^3}{s})=175000\frac{kg}{s}$ Then the power generation potential is: $W_{g}=E_{p}=m*e_{p}=175000\frac{kg}{s}*0.7848\frac{J}{kg}=137340\frac{kJ}{s}=137340kW$ $W_{g}=137.34MW$