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The Rainfall Recharge in Hard Rock Sandstone refers to the process by which rainwater infiltrates through the surface layers and percolates into the underlying hard rock sandstone aquifer. This calculation is essential for groundwater resource management in semi-consolidated sandstone formations.
The calculator uses the formula:
Where:
Explanation: The formula calculates the amount of water that infiltrates through the ground surface and recharges the underlying sandstone aquifer during monsoon seasons.
Details: Accurate recharge estimation is crucial for sustainable groundwater management, water resource planning, and understanding aquifer replenishment rates in hard rock sandstone areas.
Tips: Enter the catchment area in square meters and normal monsoon rainfall in meters. Both values must be positive numbers for accurate calculation.
Q1: What is the significance of the coefficient 7 in the formula?
A: The coefficient 7 represents the recharge factor specific to hard rock sandstone formations, accounting for infiltration rates and geological characteristics.
Q2: 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 in a specific region.
Q3: What areas are considered for computation of recharge?
A: The computation area refers to the catchment area where rainwater infiltration and percolation into the sandstone aquifer occurs.
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 infiltration rates.
Q5: How often should recharge calculations be performed?
A: Recharge calculations should be updated regularly, especially when there are significant changes in land use patterns or rainfall patterns.