Editing Pump (section)

====Hydraulic ram pump====
A [[hydraulic ram]] is a water pump powered by hydropower.<ref>{{Cite book|url=https://books.google.com/books?id=4pp6aFaMPJ4C&q=%C2%A0A+hydraulic+ram+is+a+water+pump+powered+by+hydropower.&pg=PA22|title=Biofuels: Securing the Planet's Future Energy Needs|last=Demirbas|first=Ayhan|date=2008-11-14|publisher=Springer Science & Business Media|isbn=9781848820111|language=en}}</ref>

It takes in water at relatively low pressure and high flow-rate and outputs water at a higher hydraulic-head and lower flow-rate. The device uses the [[water hammer]] effect to develop pressure that lifts a portion of the input water that powers the pump to a point higher than where the water started.

The hydraulic ram is sometimes used in remote areas, where there is both a source of low-head hydropower, and a need for pumping water to a destination higher in elevation than the source. In this situation, the ram is often useful, since it requires no outside source of power other than the kinetic energy of flowing water.