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The Recharge from Rainfall in Hard Rock Laterite refers to the process of water infiltrating through hard rock laterite formations due to precipitation. This calculation is essential for groundwater resource management in regions with laterite geological formations.
The calculator uses the formula:
Where:
Explanation: The formula calculates the rate of groundwater recharge by multiplying the catchment area by the normal monsoon rainfall and applying a recharge coefficient of 13, which accounts for the specific infiltration characteristics of hard rock laterite formations.
Details: Accurate groundwater recharge estimation is crucial for sustainable water resource management, especially in hard rock laterite areas where water infiltration patterns differ from other geological formations. This helps in planning water supply, irrigation systems, and preventing groundwater depletion.
Tips: Enter the catchment area in square meters and normal monsoon rainfall in meters. Both values must be positive numbers. The calculator will compute the recharge rate in cubic meters per second.
Q1: What is the significance of the coefficient 13 in the formula?
A: The coefficient 13 represents the recharge factor specific to hard rock laterite formations, accounting for the infiltration characteristics and water retention properties of this geological type.
Q2: How is the Area of Computation for Recharge determined?
A: The area is typically determined through geological surveys and mapping of the catchment basin where water infiltration into the hard rock laterite aquifer occurs.
Q3: What time period does "Normal Rainfall in Monsoon Season" cover?
A: It typically refers to the statistical average of rainfall measured over a 30-year period during the monsoon months in the specific region being studied.
Q4: Are there limitations to this calculation method?
A: This method provides an estimate and may need adjustment based on local geological variations, land use patterns, and actual rainfall distribution during the monsoon season.
Q5: How accurate is this recharge estimation method?
A: While it provides a good approximation for planning purposes, actual recharge rates can vary due to factors such as soil moisture content, vegetation cover, and rainfall intensity patterns.