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The Rainfall Recharge in Hard Rock Weathered Basalt refers to the process by which rainwater infiltrates through the weathered layers of basalt rock and replenishes groundwater reserves. This calculation is essential for managing water resources in hard rock regions.
The calculator uses the formula:
Where:
Explanation: The formula calculates the amount of water that infiltrates through weathered basalt layers during monsoon season, with a factor of 4 representing the recharge coefficient for this specific geological formation.
Details: Accurate rainfall recharge estimation is crucial for sustainable groundwater management, especially in hard rock areas where water resources are limited. It helps in assessing aquifer replenishment rates and planning water conservation strategies.
Tips: Enter the area of computation in square meters and normal rainfall in monsoon season in meters. Both values must be positive numbers for accurate calculation.
Q1: What is the significance of the coefficient 4 in the formula?
A: The coefficient 4 represents the specific recharge factor for weathered basalt formations in hard rock areas, accounting for the infiltration characteristics of this geological formation.
Q2: How is the area of computation determined?
A: The area of computation refers to the catchment area where rainwater infiltration and groundwater recharge occur, typically measured through geological surveys and hydrological studies.
Q3: What time period does "normal rainfall" refer to?
A: Normal rainfall typically refers to the statistical average of rainfall measured over a specified period, usually 30 years, during the monsoon months in a given region.
Q4: Are there limitations to this calculation method?
A: This method provides an estimate and may need adjustment based on local geological conditions, soil types, and actual rainfall patterns. Site-specific studies may be required for precise calculations.
Q5: How can this calculation be used in water resource management?
A: The results help in planning groundwater extraction, designing recharge structures, and implementing sustainable water management practices in hard rock areas.