Water: a source of power Introduction, Hydropower, Dams, Political power, Conclusions

We all have experienced the natural power of water on occasion. It humbles us when we watch the force of a waterfall; it tumbles us when we stand in a swift current or fight the giant waves washing ashore. The intrinsic energy of running or falling water has been recognized since ancient times as a useful energy source. Controlling the earth’s natural waters is also a fundamental human urge.