Sprinkler and Micro Irrigation

Distribution Uniformity ($DU$) of a sprinkler system based on the lowest quarter depth is defined as:

Options:

• (A) $DU = \frac{\text{Average depth caught in lowest quarter of catch cans}}{\text{Average depth caught in all cans}} \times 100$
• (B) $DU = \frac{\text{Maximum depth}}{\text{Minimum depth}} \times 100$
• (C) $DU = 100 - CU$
• (D) $DU = \frac{\text{Depth at lateral inlet}}{\text{Depth at lateral outlet}} \times 100$