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[[Image:ram_hydrolic_pump.jpg|right]]
[[Image:PrincipleHydraulicRam.jpg|thumb|right|300px200px|Principle of a Hydraulic Ram pump.]][[Image:HydraulicRamChildren.jpg|thumb|right|300px200px|Children standing around a hydraulic ram pump. Photo: [http://www.ashden.org/media/international_photos/2007 AID Foundation, Phillippines.]]]
A hydraulic ram pump is a water pump powered by water with a height difference. In areas where natural flows exist with a height difference of the water over a small distance, hydraulic ram pumps can be used to transport water to higher grounds without using electricity or fuel. The hydraulic ram uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. Apart from the kinetic energy of the water, no other source of power is needed.
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! width="50%" style="background:#efefef;" | Advantages
! style="background:#ffdeadf0f8ff;" | Disadvantages
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| valign="top" | - Uses renewable energy sources. <br>
==Construction, operations and maintenance==
[[Image:PrincipleHydraulicRam2.png|thumb|right|300px200px|Components of a hydraulic ram pump:<br>
1. Inlet — drive pipe<br>
2. Free flow at waste valve<br>
==Field experiences==
[http://www.ashdenawards.org/winners/aidfoundation This article] describes the impact the introduction of the hydraulic ram has had in the Philippines.
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|[[Image:rsr 788.jpg|thumb|none|200px|<font size="2"><center>Project 788</center></font>|link=http://www.akvo.org/rsr/project/788/]]
|'''AKVO RSR Project:''' [http://www.akvo.org/rsr/project/788/ MWA-LAP: Nicaragua]
WaterAid will implement the MWA-LAP in Nicaragua, focusing in 2 indigenous territories (Llano Norte, Tasba Pri) in the RAAN. The targeted communities in the RAAN have a high concentration of marginalized indigenous and afro-descendants living in remote, hard to reach areas that are approximately a 3-hour drive on dirt roads from the municipal seat.
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==Manuals, videos, and links==