How to make a hydraulic ram pump which requires no electricity and no motor.This pump uses falling water to lift a lesser amount of water to a higher elevation than the source.
source/image: Junkyard – Origin of Creativity
So, being primarily used for lifting relatively small amount of water to a higher elevation. if you want to deliver 2 cubic meter of water to an elevated location, you need at least 6 cubic meters of water to operate the pump 4 cubic meters of which will be used to drive the pump and goes directly as waste.
The device 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.
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.