1. What is Barlow's Formula For Runoff In Flat Cultivated And Absorbent Soils With Light Rain?

Barlow's Formula estimates runoff in flat cultivated and absorbent soils with light rain conditions. It provides a simplified approach to calculate runoff based on rainfall measurements.

2. How Does the Calculator Work?

The calculator uses Barlow's Formula:

Where:

• \( R \) — Runoff (Centimeter)
• \( P \) — Rainfall (Centimeter)
• 0.07 — Runoff coefficient for flat cultivated and absorbent soils with light rain

Explanation: The formula applies a fixed coefficient of 0.07 to the rainfall measurement to estimate the resulting runoff.

3. Importance of Runoff Calculation

Details: Accurate runoff estimation is crucial for water resource management, agricultural planning, flood prediction, and environmental impact assessment.

4. Using the Calculator

Tips: Enter rainfall measurement in centimeters. The value must be valid (rainfall > 0).

5. Frequently Asked Questions (FAQ)

Q1: When is Barlow's Formula applicable?
A: This formula is specifically designed for flat cultivated and absorbent soils with light rain conditions.

Q2: What are the limitations of this formula?
A: The formula uses a fixed coefficient and may not be accurate for different soil types, slopes, or heavy rainfall conditions.

Q3: How is runoff typically measured?
A: Runoff is usually measured either seasonally or annually, depending on the specific application and data requirements.

Q4: Can this formula be used for urban areas?
A: No, this formula is specifically designed for flat cultivated and absorbent soils and may not be appropriate for urban environments.

Q5: What factors affect the runoff coefficient?
A: Soil type, land use, slope, vegetation cover, and rainfall intensity all influence the runoff coefficient value.