Discharge (\( Q = 0.61 \times 10^{-3} \times A \times \sqrt{2gh} \)):

Where:

• \( Q \) is the discharge, in liters per second (lps).
• \( A \) is the area of the orifice, in square centimeters (cm²).
• \( g \) is the gravitational acceleration, 9.8 cm/sec².
• \( h \) is the head, in centimeters (cm).