Because the Papa water powered pump uses only the energy of the flowing water, it is THIS energy that powers the pump.
The two primary factors in determining this power are:
1) Flow rate of supply water
The flow rate of your supply water source is a matter of measurement. This is quantified in terms of Litres or Gallons per minute. Remember it may vary throughout the year
2) Supply and Delivery Head of the supply water
Because the velocity of the supply water ( ignoring frictional losses ) is caused by the 'Supply Head', we use this to determine the velocity of the supply water. The factor that consumes the available power of the pump ( ignoring frictional losses ) is the height to which the water is to be delivered. This is referred to as the 'Delivery Head' ie the higher the Delivery Head, the less water can be delivered.
Having established the flow rate of your water source, together with the Supply and Delivery Heads, by referring to the chart below, an estimate of the approximate percentage supply water that will be delivered can be determined.
Example (shown in red): for a supply head of 10 feet, 20% of the total volume of flow can be delivered to a height of 30 feet.