1. What is the Runoff Volume Percentage For Wet AMC?

The Runoff Volume Percentage for Wet Antecedent Moisture Condition (AMC) estimates the percentage of rainfall that becomes surface runoff under wet soil moisture conditions. It's an important parameter in hydrology and water resource management.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ks \) — Runoff Volume Percentage (%)
• \( p \) — Daily Rainfall (mm)

Explanation: This linear regression formula calculates the percentage of rainfall that becomes runoff under wet antecedent moisture conditions.

3. Importance of Runoff Volume Calculation

Details: Accurate runoff estimation is crucial for flood prediction, watershed management, irrigation planning, and environmental impact assessments.

4. Using the Calculator

Tips: Enter daily rainfall in millimeters. The value must be non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What is Antecedent Moisture Condition (AMC)?
A: AMC refers to the moisture content in the soil before a rainfall event, which significantly affects how much rainfall becomes runoff.

Q2: What defines Wet AMC?
A: Wet AMC occurs when the soil is nearly saturated, typically after heavy rainfall in the preceding 5 days.

Q3: How accurate is this formula?
A: This is an empirical formula that provides reasonable estimates for general applications but may need calibration for specific watersheds.

Q4: What are typical Runoff Volume Percentage values?
A: Values typically range from 2-80% depending on rainfall intensity, soil type, land use, and antecedent moisture conditions.

Q5: When is this calculation most useful?
A: This calculation is particularly valuable for flood forecasting, urban drainage design, and agricultural water management.