Question

Drainage coefficient is depth of water drained from an area during the period of:

• A. 8 hours
• B. 12 hours
• C. 20 hours
• D. 24 hours

Hint:

Just like rainfall is often measured in mm/day, the drainage coefficient is also a depth rate, standardized to a 24-hour period (one day).

Answer 1

The Correct Option is D

Step 1: Define the term Drainage Coefficient. The drainage coefficient is a fundamental parameter in the design of agricultural drainage systems. It represents the design rate at which excess water should be removed from the soil to prevent crop damage.
Step 2: State the standard time period associated with the definition. By standard definition, the drainage coefficient is expressed as the depth of water (in mm or cm) that the drainage system is designed to remove from the drainage area over a standard time period of 24 hours. This standardized period allows for consistent design and comparison of drainage systems across different regions and conditions.