1. What is Time Interval of Rainfall Hyetograph?

The Time Interval of Rainfall Hyetograph represents the amount of time required for the change from initial to the final state in rainfall measurement. It is calculated by dividing the total duration by the number of pulses observed in the rainfall hyetograph.

2. How Does the Calculator Work?

The calculator uses the Time Interval formula:

Where:

• \( \Delta t \) — Time Interval (Hour)
• \( D \) — Duration (Hour)
• \( N \) — Pulses of Time Interval Observed in Rainfall Hyetograph

Explanation: The equation calculates the time interval by dividing the total duration by the number of pulses observed in the rainfall hyetograph.

3. Importance of Time Interval Calculation

Details: Accurate time interval calculation is crucial for analyzing rainfall patterns, hydrological modeling, and flood prediction studies.

4. Using the Calculator

Tips: Enter duration in hours and number of pulses. Both values must be valid (duration > 0, pulses ≥ 1).

5. Frequently Asked Questions (FAQ)

Q1: What is a rainfall hyetograph?
A: A rainfall hyetograph is a graphical representation of rainfall intensity against time, showing the distribution of rainfall over a specific period.

Q2: Why is time interval important in hydrology?
A: Time interval is important for understanding rainfall patterns, designing drainage systems, and predicting flood events.

Q3: What units are used for duration and time interval?
A: Both duration and time interval are typically measured in hours, but other time units can be used as long as they are consistent.

Q4: Can this calculator be used for other types of time interval calculations?
A: While specifically designed for rainfall hyetograph analysis, the formula can be applied to any situation where time interval needs to be calculated from total duration and number of pulses.

Q5: What if I have zero pulses?
A: The number of pulses must be at least 1. Zero pulses would result in division by zero, which is mathematically undefined.