(master study guide in exam-style Q&A
format, with answers)
1. What is the measure of pressure to head?
Answer: Head (feet) = Pressure (psi) × 2.31
Explanation: Converts pressure in psi to equivalent vertical water column height; used to determine pump
requirements.
2. What is the measure of head to pressure?
Answer: Pressure (psi) = Head (ft) × 0.434
Explanation: Converts vertical water height back to pressure for system design calculations.
3. How is pump capacity (GPM) calculated?
Answer: GPM = Total gallons used ÷ 7 × time (minutes)
Explanation: Determines flow rate required based on total water demand.
4. How is total suction lift calculated?
Answer: Total Suction Lift = Static Water Level + Drawdown + Friction Loss + Pump Elevation (jet pumps
only)
Explanation: Ensures pump can lift water from source accounting for system losses.
5. What is static discharge?
Answer: The elevation of the highest water level above the top of the well in an open discharge system.
Explanation: Helps determine the pump head requirement.