Home
Back
Barlow's Formula:
| From: | To: |
Barlow's formula is a simplified method for estimating runoff from rainfall in specific soil conditions. It provides a quick calculation for runoff estimation in flat, partly cultivated stiff soils with average or varying rainfall patterns.
The calculator uses Barlow's formula:
Where:
Explanation: The formula applies a constant coefficient of 0.15 to estimate runoff from rainfall, specifically designed for flat, partly cultivated stiff soil conditions.
Details: Accurate runoff estimation is crucial for water resource management, flood prediction, irrigation planning, and environmental impact assessment in agricultural and hydrological studies.
Tips: Enter rainfall measurement in centimeters. The value must be valid (rainfall > 0).
Q1: What types of soil conditions is this formula designed for?
A: This formula is specifically designed for flat, partly cultivated stiff soils with average or varying rainfall patterns.
Q2: How accurate is Barlow's formula compared to other runoff estimation methods?
A: While simplified, it provides reasonable estimates for the specific soil conditions it was designed for, though more complex models may be needed for precise hydrological studies.
Q3: Can this formula be used for all soil types?
A: No, this formula is specifically calibrated for flat, partly cultivated stiff soils and may not be accurate for other soil types or terrain conditions.
Q4: What is the significance of the 0.15 coefficient?
A: The 0.15 coefficient represents the runoff coefficient, indicating that approximately 15% of rainfall becomes surface runoff under the specified soil conditions.
Q5: Are there limitations to this formula?
A: This simplified formula may not account for all variables affecting runoff, such as soil saturation levels, vegetation cover, or extreme rainfall events.