Size of Stream (\( Q \)):

\[ Q = \frac{27.8 \cdot A \cdot D}{T} \]

Where:

• \( Q \) is the size of the stream, in liters per second (lps).
• \( A \) is the area irrigated, in hectares.
• \( D \) is the depth of water applied, in centimeters (cm).
• \( T \) is the time required to irrigate, in hours.