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The Normal Rainfall in Monsoon Season refers to the statistical average of rainfall measured over a specified period, typically 30 years, during the monsoon months in a given region.
The calculator uses the formula:
Where:
Explanation: This formula calculates the normal rainfall during monsoon season by dividing the recharge from rainfall by the product of rainfall infiltration factor and area of computation for recharge.
Details: Accurate calculation of normal rainfall in monsoon season is crucial for water resource management, agricultural planning, flood forecasting, and groundwater recharge assessment in monsoon-dependent regions.
Tips: Enter recharge from rainfall in m³/s, rainfall infiltration factor (dimensionless), and area of computation for recharge in m². All values must be positive numbers.
Q1: What is the typical range for rainfall infiltration factor?
A: The rainfall infiltration factor typically ranges from 0.1 to 0.5, depending on soil type, land use, and surface conditions.
Q2: How is recharge from rainfall measured?
A: Recharge from rainfall is typically measured using water balance methods, tracer techniques, or groundwater level fluctuation analysis.
Q3: Why is monsoon season specifically important for this calculation?
A: Monsoon season typically contributes the majority of annual rainfall in many regions, making it crucial for groundwater recharge and water resource planning.
Q4: What factors affect the rainfall infiltration factor?
A: Soil porosity, vegetation cover, slope, rainfall intensity, and antecedent moisture conditions all affect the infiltration factor.
Q5: How accurate is this calculation method?
A: The accuracy depends on the precision of input parameters. Field measurements and local calibration can improve accuracy for specific regions.