Groundwater Wells and Pumps

Well efficiency $E_w$ is defined as the ratio of:

Options:

• (A) Theoretical aquifer formation drawdown to total drawdown measured inside the well ($E_w = \frac{B Q}{B Q + C Q^2} \times 100$)
• (B) Discharge to drawdown
• (C) Pump power output to motor input
• (D) Static water table depth to pumping depth