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The Recharge from Rainfall in Hard Rock Areas refers to process where rainwater infiltrates soil and percolates down to replenish groundwater reserves in regions characterized by hard rock formations with consolidated sandstone.
The calculator uses the formula:
Where:
Explanation: The formula calculates the amount of water that infiltrates the ground and replenishes aquifers in hard rock areas with consolidated sandstone, using a maximum rainfall factor of 8.
Details: Accurate groundwater recharge estimation is crucial for sustainable water resource management, especially in hard rock areas where water storage capacity is limited and recharge rates are critical for maintaining water supplies.
Tips: Enter the area of computation in square meters and normal rainfall in monsoon season in meters. All values must be positive numbers.
Q1: What is the significance of the factor 8 in the formula?
A: The factor 8 represents the maximum rainfall infiltration coefficient for hard rock areas with consolidated sandstone, accounting for optimal recharge conditions.
Q2: How is the area of computation determined?
A: The area of computation is typically the catchment area where rainwater collects and has the potential to infiltrate into the groundwater system.
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.
Q4: Are there limitations to this calculation method?
A: This method provides an estimate and may need adjustment based on specific local conditions, soil types, and actual rainfall patterns.
Q5: How can this calculation be used in water resource management?
A: This calculation helps in planning sustainable groundwater extraction, designing recharge structures, and managing water resources in hard rock areas.