From Longman Dictionary of Contemporary Englishwater powerˈwater ˌpower noun [uncountable] TPWpower obtained from moving water, used to produce electricity or to make a machine work
Examples from the Corpus
water power• The Yek used wind and water power, but this was clearly independent of both.• Technical progress in the industry lay above all in the increased exploitation of water power.• On the weekend beginning 29 April, students of water power will be able to learn how to put a project together.• It is still at work, producing animal feed and, unlike many others, continues to make use of water power.• Factory owners added chimneys and extra workshops to their factories as they replaced water power by steam power.• There they used the water power to drive large hammers and grinding wheels made of the local Millstone Grit. 