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Recharge from Rainfall in Hard Rock Vesicular is the process by which precipitation infiltrates into the ground through fractures, joints, and vesicles in hard rock formations. This calculation is essential for groundwater resource management in hard rock areas.
The calculator uses the formula:
Where:
Explanation: The formula calculates groundwater recharge by multiplying the area of computation by the normal rainfall and a constant factor of 5, which represents the recharge coefficient for hard rock vesicular formations.
Details: Accurate recharge calculation is crucial for sustainable groundwater management, water resource planning, and understanding the water balance in hard rock aquifer systems.
Tips: Enter the area of computation in square meters and normal rainfall in meters. Both values must be positive numbers for accurate calculation.
Q1: What types of hard rock formations does this formula apply to?
A: This formula is specifically designed for vesicular and jointed basalt formations commonly found in hard rock areas.
Q2: Why is the constant factor 5 used in the formula?
A: The factor 5 represents the recharge coefficient that has been empirically determined for hard rock vesicular formations based on field studies and hydrological observations.
Q3: How is normal rainfall in monsoon season determined?
A: Normal rainfall is typically calculated as the statistical average of rainfall measured over a 30-year period during monsoon months for a specific region.
Q4: What are the limitations of this calculation method?
A: The formula provides an estimate and may need adjustment based on local geological conditions, land use patterns, and actual infiltration characteristics.
Q5: Can this formula be used for other types of rock formations?
A: This specific formula is optimized for vesicular and jointed basalt formations. Different coefficients may be needed for other hard rock types.